Of course, others here have tried several, but my first (and only, thus far) was a V2, mainly because I had seen good reviews, and for the Traveler Starter Pack I wanted, it came with two batteries (that you could mix/match colors and auto/manual), a traveling charger case, a cig that is actually on a USB cord rather than a battery, which I really like when I'm on my computer or in the car (using it now... harder hit than the others, too) and came with 15 cartridges, rather than 5, which I saw a lot. And of course, the wall charger, which is really just the plug-in unit, and all charging attachments are USB, so all are intermixable. Though I haven't tried any others, I'm really happy with my purchase so far. I always have one charging, one charged, and if I'm totally out of luck, one to plug in and vape with.
My one qualm was with ordering on the website - for some reason, after going through all of the steps with address, billing address, shipping preferences, and credit card info, I kept circling back around to the beginning with address, billing, shipping, etc., when I tried to finalize the order. After a few attempts and continued circling, I ended up just calling and placing the order with a representative, who was surprisingly pleasant, and quite nice. Paid for overnight, came as expected.
I hadn't found too many people unhappy with their product, just with timely shipping and issues with products being out of stock and on backorder, which I believe was resolved, and due to moving to a new and bigger warehouse or something, but I never had any issues at all.
I think you already bought your pv, but figured I'd throw my V2 input out there, since I'm quite pleased, and am often disappointed with things I get too excited about before they've arrived at my mailbox.

(of course, I'm usually pretty impulsive - I WANT IT NOW - and get what's available THEN, AND THERE... almost bought a SmokeAnywhere from a mall kiosk because I didn't want to wait a day or two for shipping. SOOOOO glad I didn't...)
*also surprised: dropped my automatic battery in my watercolor painting water tub, and she's good to go. Whew... got away with that one...
Anyway... I'm sure someday I'll upgrade, but for now, this newbie is pretty stoked.
