Whether it will make a difference or not depends on which
device you're using. They'll work fine on a Riva or eGo battery, but they'll probably be even better when used with a 3.7V device. On a 5V device they might run a bit hot and burn your
juice. I've been using the 3.0ohm CE2's with my eGo. It doesn't produce a big plume of vapor and the taste is okay. On my mod at 3.7V the taste and vapor production is better, but I have to pace myself or else I run into dry spots. At 5V the first couple of hits are great, but after that it gets hot and the
juice starts getting a burnt taste.