As with headphones, I've kind of gotten into collecting various mods........Screwdrivers, Silver Bullet, Copper, Prodigy, Phideas bottom feeders, and a host of others. I prefer big battery (18650) mods because of time between recharging. My go-to vape is the Silver Bullet @ 3.7 with a standard Joye 510 and a drip-tip. I sometimes use a GLV-2 @ 5 volts, or a low res atty if I want an extra kick. I'm at 6 mg nicotene. After close to two years of using e-cigs, and purchasing hundreds of different flavored e-juice, I've found only a few juices that are in daily rotation. Ikenvape RY4, Alien Visons Boba's Bounty and Raf-A-Licious, Backwoods Brew Casablance, and Bluemist Vaping's DK Tobacco. Since I rolled my own cigarettes for so many years, I find I actually enjoy all the fiddling that seems to be a necessary component of using e-cigs. I've always wanted to try an e-pipe, and will most likely get one in the near future.
I feel that any smoker on Head-Fi is a prime candidate for e-cigs, because, if you think about it, it's just more gadgets to play with.