So I recently bought the new $35 starter kit; the store only had the Menthol pack included (I really wanted the variety pack one - shame Blu doesn't sell a variety pack online!), so I bought a Java pack seperate in case I didn't like the Menthol. Well, I get home, and try the two flavors, and right away, I notice that the Java tastes like sweet coffee for only a couple hits; the cartomizer then makes a loud "pop" and then it started immediately tasting like a soft, but distinct, burnt cotton. I've had this happen to different brands and carts before, so I thought "Oh well, move to the next one." I then try the menthol, and while the flavor was only strong and lush on the first couple hits, it didn't loose a menthol taste no matter how much the thing popped and sizzled and tasted "fine" for hours. After I'm done with that cart, I go back and try another Java. Immediately, the thing pops extremely loud, and opposite to the wonderful smell the Java's have, it again tasted like burnt cotton. Even some metallic hazes in there. I try a third one, which doesn't even produce a vapor at all until I'm sucking so hard I'm red in the face, where it finally "pops" and just tastes burnt too. Sadly, I try a 4th, and while this one stays "tolerable" tasting for a few minutes (maybe traces of coffee?), it again goes burnt after a few hits. So I then try out only my 2nd Menthol, which does as good as the first Menthol cart, staying enjoyable. This means that it's not my battery, not how hard I'm inhaling (I do a very soft, low, slow inhale to avoid burning noises), and not anything else. Does anyone know what's going on? Also, I had to charge my pack and batteries using the USB chord plugged into my computer (I don't have a car). Could any sort of voltage difference that is different from the specified on the car charger be causing the carts to heat up too much (which would probably effect darker liquid first?) Also, just as a review, one of the batteries in the pack barely works, it'll only light up for a second or not at all, unless you take a elephant-strength inhale. I will have to send it in.