I've really enjoyed hangin' out with all the folks on the GG forums and since I DIY my own juice..I thought I'd add my methods to the resources here just for fun.
I normally buy my 50mg/pg nic, pg and vg from xtremevaping.com. Levi's stuff is very clean and cost is great. I recently bought a 500ml jug of each..so I'm set on that for awhile. I buy my Flavourart flavors from HappyVaper.com in Canada. They seem to have the best availability on stock and good prices as well. I usually get shipping in about 3-4 days too...even from Canada. I did use some Lorann's for awhile, but the darker colors in Lorann's seemed to kill my atties..and everything just tasted sweet..but not distinct. The FlavourArt stuff is usually fairly light colored and if I vape Peanut...that's what I taste..and smell. I also ordered some Perfumer's Apprentice awhile back, but didn't like any of them...all tasted and smelled heavily of alcohol. I've recently gone back to play with them a bit and they seem to have settled down some and my taste buds are better now than a few months ago..so they may still have merit yet.
As to how I mix...I usually do 30ml or 50ml batches of 20-25mg juice at a time..unflavored...mixing about 20-25% VG in that. I use a syringe to carefully measure when I make my big batches.
Then I'll just pour up some of the unflavored 20mg into my smaller 3ml or 6ml bottles and add flavors to those as the mood hits me. I will add about 6-8 drops to my 3ml or about 15 drops to my 6ml bottles..of whatever flavor I'm craving. This makes it very easy to change my mind or tweak a flavor and it doesn't require all the calculations at that point...very simple. I like to blend flavors too...usually at least 2-3 drops would be some tobacco flavor then a mix of maybe a coffee, caramel, or some other flavor.
My fav tobacco flavors are Desert Ship and Maxboro Ultimate. I did not like the Cowboy or the Camel Ultimate flavors.
I also use Caramel, Chocolate, Vanilla Madagascar, Apple Pie, Vienna Cream, Espresso, Cappuccino and Peanut. I like these because most of them blend well together and they don't conflict with my other daily addiction..coffee..LOL! I also add a drop or two of PA's Cotton Candy or Sweetener if I'm really wanting a sweet punch(not often).
I've tried many other flavors early on and some I liked..some I didn't..but I found that even if I liked something(Lorann's Rootbeer)...if it was an atty-killer it wasn't worth it.
Anyway..that's my vape...simple and easy to manage.