I personally have been using the Vape-it brand e-cigs and juices and have loved them. My roomate uses E-go, which are cheaper, and their flavors are usually pretty good too, plus I don't notice a huge burn with his devices. So I like both of these brands, they are affordable ($20-$45 for the whole set up, $3-$5 for the juice, except premium flavors for Vape-it run up to $15). Below is my experience with vapor-blends.
I stopped into a smoker friendly store the other day and saw Vapor-Blends E-Juice. I usually buy a bottle of about the same size for $5 from the Vape-it store, but since I was there, I thought I might as well try it, at a much higher price of $7.99, just for the convenience of not having to drive across town. The flavor I purchased was Pina Colada. I have used maybe 1/8 of a bottle and have to say, this is the most foul thing I have ever experienced. The first few puffs were all right, slightly sweet with a kind of chapstick flavor, but not bad. Within 50 puffs, it just tasted like burnt wax, no sweetness, just nastiness. I tried changing out my wick, with the exact same results. I am very disappointed. With the price you are charging, the flavor should maintain it's fullness for the life of use, not change into a vile concoction that then has to be cleaned from my e-cig. Now I am stuck with an almost full bottle of something I will never use, and would never consider passing along even to my worst enemy.