Guide to DIY Flavoring

Nikhil;1097224 said:

LorAnn is the oldest brand, but every company has its strengths and weaknesses, and even general quirks or specialties. If you just want to see which brands carry which flavors, they're organized here.

FlavourArt - list of resellers here. Best prices found so far at ecigExpress (30ml) and me (3ml).
Some of their flavors are very strong others are average in strength, and have been reviewed as good quality. They taste more realistic and natural than others. Italian style to them, and unlike most companies are not innately sweet. A full list of flavors and safety information here. Sometimes FlavourArt seems to take a little extra time to fully diffuse through the final solution, probably because it's so concentrated.
FlavourArt average strength needed: 2-15%
Spicy Cinnamon Candy: ?%, 1/5
Butterscotch: 10-15%, 5/5
Cappuccino: 10-15%, 5/5
Cherry: 10-15%, 5/5
Chocolate: 5-10%, 5/5
Citrus Mix: 10-15%, 5/5
Cocoa: ~5%, 5/5
Coconut: 5-10%, 5/5
Concord Grape: 10-15%, 5/5
Cookie: 5-10%, 5/5 <-- Recommended for combining with other flavors, not standalone.
Mango: ~10%, 5/5
Panettone: 5-10%, 4/5
Pear: 10-15%, 5/5
Peppermint: 5~%, ?/5
Pineapple: ~10%, 5/5
Strawberry: 10-15%, 5/5
Vienna Cream: 5-10%, 5/5
Whipped Cream: ~15%, 4.5/5 <-- Recommended for combining with other flavors, not standalone.

Following %'s taken from FlavourArt's site as suggestions for flavoring usage, many people here report using some at up to 15% for good flavor. User recommendations here will be added in (parentheses):
Perique Black 1%
Cuban Supreme 2%
Dark Vapure 2.5%
Mellow Sunset 2%
Burley 3%
Latakia 2%
Virginia 2%
Maxboro Ultimate 2%
Cowboy blend 1%
Camel Ultimate 2%
Shade 2%
Desert Ship Blend 1%
Torrone 4%, 5/5
Coffee Espresso 2%
Blackberry 1%
Apple Pie 3%
Hazelnut 2% (~4%), 5/5
Chocolate 4%, 5/5
Vanilla 2%, 5/5
Tiramisu 3% (5-8%), 5/5
Anise 1%
Peppermint 3%
Spearmint 3%
Menthol 3%
Licorice 4%
Cinnamon Ceylon 3%
Black Cherry 3%
MaxUT has an excellent taste chart for FlavourArt's tobaccos converted from info on their site.

Capella - A few in the US at ecigexpress.
The flavor drops are more evenly calibrated in strength than other flavors and often innately sweet, they specialize in more complex bakery/confectionary/drink flavors as opposed to basic flavors. There haven't been a lot of specific reviews, they don't seem to make anything that's just bad. Recommended for new mixers who don't want to get into combining multiple flavors. Has a section for e-liquid use if you're wondering about safety.
Capella average strength needed: 10-20%
French Toast strength needed: 15-20%, 5/5
GoodDog's review of 11 flavors.

Faerie's Finest
Pretty popular because they are made from all natural flavors unlike most other brands. The strength and quality from flavor to flavor varies like LorAnn's but none are overly strong. A list of which ones are safe for vaping is here.
Faerie's Finest average strength needed: 10-30%
Butterscotch: ?%, 4.5/5
Lemon-Lime: 10-20%, 5/5
Pumpkin: ?%, 1/5
Pie Spice: ?%, 4/5
Grape: 15-25%, 5/5
Rum Cream: ?%, 5/5
2x Clear Vanilla: ?%, 5/5

The Perfumer's Apprentice - 6ml/15ml available cheaper here with coupon code "ECF"
Great for the price. They sell other DIY materials and basic ingredients for mixers, notably Menthol Crystals and pre-diluted Menthol drops, diluted Sucralose sweetener (although I recommend using pure Sucralose), and Ethyl Maltol (links are to forum threads about how to use them, products are available on PA's site). A few flavors are clearly stated as being oils.
Perfumer's Apprentice average strength needed: 5-15%
Little_Girl has blogged about her experiences with a variety of TPA flavors. I will not attempt to reduce her analysis to numbers.
Almond Amaretto: 5-10%, 5/5
Apple: 10-15%, 4.5/5
Black Cherry: 5-15%, 5/5
Bittersweet (Choc): 10-15%, 4/5
Caramel: 10-15%, 5/5
Caramel Candy: 15-20%, 5/5
Cheesecake: 5-15%, 2/5
Chocolate: 10-15%, 5/5
Cinnamon Red Hots: 5-10%, 5/5
Coconut Extra: ~10%, 5/5
Cotton Candy: 10-20%, 5/5
Graham Cracker: 10-15%, 5/5 - recommended for combining with others.
Lime (oil-based): 1-5%, 4/5
Milk Chocolate: 20%, 4/5
Peanut Butter: 10-15%, 5/5
Pear: 10-15%, 4.5/5
Pizza: ~5%, 5/5
Plum: 5-10%, 4/5
Sweet Cream: 5-10%, 4/5 - recommended for combining with others.
Tangerine (oil-based): 1-5%, 5/5
Tobbaco Absolute (TA): <1%
Vanilla Bourbon: 10-15%, 4.5/5
Waffle: 20%, 5/5
Wintergreen: 20%, 5/5
PA Sucralose Sweetener: 2%+, 4.5/5

Bickford Flavors
often weak relative to the rest. They're said to be good, some more so than others. A thread on safety information for all flavors available here.
Bickford average strength needed: 20-40%

Tasty Puff Flavors - available cheaper here or here.
consistently good reviews all around - here's the most extensive one. Their range of flavors isn't huge. Safe for vaping, but some have artificial coloring.
Tasty Puff average strength needed: 1-15%
Chumpy Chocolate: 2-15%, 5/5
Chick Magnet Cherry: 2-10%, 5/5
Pucked Up Pineapple: 5-15%, 4/5
Midnight Spice: 2-10%, 2/5
Joosy Froot: 5-15%, 3/5
Rasta Rootbeer: 1-5%, 4/5
Electric Banana: 2-10%, 5/5
Pimpy Fresh Peach: ~4%, 5/5
Convicted Melon: 5-10%, 4/5
Awesome Apple: 2-10%, 4/5
Cotton Mouth Candy: 2-10%, 4.5/5
Jungle Juice: 2-10%, 5/5
Blueberry: 2-10%, 3/5
Strawberry: 2-10%, 5/5
Nilly Vanilla: 2-10%, 5/5

Seedman's Flavors
a lot of tobacco flavors along with others that go well with tobacco. aimed at home-grown tobacco users, make sure you buy the Top Note Flavors (at the bottom of their page). A thread with some initial reviews and recipes available here.
Seedman's average strength needed: 5-15%
Honey strength needed: 5-10%, 5/5

Other Flavoring Suppliers:
Decadent Vapours
Healthcabin
Nature's Flavors - Not recommended for new DIYers, PG-Free (Use Coffee & Tea Flavoring section)
BlueMist Vaping - 8-15% recommended.
McCormick's Extracts - Check ingredients, some unusable.
Spice Barn - Check ingredients, some unusable.
Flavor West
Splendex/EZ-Sweetz Sucralose - 0.5-1% (1-2 drops per 10ml)

Awards Section
When multiple brands carry a popular, similar flavor, people want to know which one to buy. There is no REAL best when it comes to flavor, this is just a recommendation.

French Vanilla (ice cream-like): 1) PA French Vanilla 2) LorAnn Bavarian Creme
Creamy Vanilla: 1) Capella Vanilla Custard 2) PA Vanilla Bean Ice Cream / Vanilla Custard
True Vanilla: 1) FA's Vanillas 2) PA Vanilla Bourbon
Chocolate Flavor: 1) Capella Double Chocolate 2) FA Cocoa / Chocolate 3) Tasty Puff Chocolate
Coffees: FA / PA
Toffee: 1) LorAnn English Toffee 2) PA English Toffee
Caramel: 1) PA Caramel Candy 2) FA Caramel
Honey: 1) Seedman's Honey 2) FA Honey
Cinnamon (Candy-like): PA Cinnamon RedHots
Cinnamon (Bakery): PA / FA Cinnamon, LA Cinnamon Oil (strongest)
Cheesecake: LorAnn Cheesecake
Licorice/Anise: PA / FA
Tobacco: Varies - Seedman's / PA / FA
Cherry (none are that great): 1) Seedman / FA Cherry 2) PA Black Cherry / Maraschino Cherry
Watermelon: 1) TastyPuff (fruit) 2) FA/PA (fruit-like) 3) LorAnn (candy-like)
Mint: 1) LorAnn Creme de Menthe 2) PA / FA

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