The only one I've used personally is the creme brulee, but have quite a few friends who use them exclusively after trying many other brands. I'll be trying some FA and also VZ in both SC and Gourmet. The creme brulee is yummy at 2.5% which mostly comes out to a drop per ml of juice. Very cost effective! IF you like them, you can also get the baker flavors from germany which is what the gourmet flavors are I am pretty certain......even less (if you buy enough to make shipping worth it around 17 euros) and even more concentrated.
Baker Flavors - ecigs freedom to vape with Valuecig Been told once you register and put them in cart they come out to 3.30 euros. Not sure what that is in $$.
The biggest thing I like about it, is that my DIY is stoopit simple. Mix 500mls of nic base in a jar. Pull out whatever amt I want to use for a flavor, add my flavorings by drops. Done. Most folks say change them to 40 drops per ml in the calculator. It worked for me with the one I've tried. Doesn't skew my base at all really. I mix my base with a pyrex measuring cup. no need for syringes, graduated cylinders, or tons of stuff. easy peasy lemon squeezy, can't wait to get some more of the flavors.