The Go-Go is probably the 9th or 10th ecig/PV that I've tried. But it's the first, and only so far, that I like better as time passes (versus the opposite). I've been considering whether or not to bump up to one of the high end VV's for my birthday (a few months away) and put myself at the same level as my snot-nosed, 23 year-old son (paternal competition is alive and well!). He's got a BuzzPro.
However, the more I use the Go-Go, the more I like it (about 50 days in right now). The carts are utterly amazing, the size, weight and balance (of the unit) are perfect (for me), and the performance is unquestionably satisfying (SO much more so than anything else I've tried). The little button protector (CHEAP accessory) allows me to stick in my pocket without worrying, AND I can drive my (manual stick) car with it comfortably in my RIGHT hand. I had to use my LEFT had for smoking cigs (to flick ashes out the window). Man, I'm freaking happy.
When I'm looking for (or need) things with a bit more "KICK", I simply switch off from the Go-Carts to the Go-Go Dual Coil Dual Coil 3.5 Clear Cartomizer (aka "GGDCC") that will knock your socks off. I usually only make it about half-way through before switching back to a Go-Cart (sometimes having broken out in a light sweat from the hits). It just gives me those BIG VTF hits that I'm craving, for whatever reason, and therefore soothes what ails me.
I just do not know whether it's worth a trade-up ("up" being an uncertain part of that equation). I think I may well have found my preferred device. I'm continue considering it but, for the time being, at least, I'm quite content.