I've had my IPV2X since mid Dec and been using it pretty much daily since so just over a month.
Really like this mod, the larger button is nice and clicky, seems solid, no rattle on mine. No software updates for it, but its solid as is, assuming you are good with 60w. The memory functions work well, I like them, even if they are forced on you.
I also like the form factor, nice, and compact; it was a large reason I wanted it. Although it is not small like some of the mini mods coming out recently, its reasonable size for a single 18650 mod IMO. Battery life is fine for a single 18650 too, depends largely on the battery you use.
I think it looks good without the chrome beveled edges like ipv3/2S. The black is more of a really dark gray, and looks great with the buttons.
Screws for the battery backplate is lame, but works fine, and I get no play from it. It seems like if pioneer4you wanted to perfect the IPV2 they should have went with magnets instead of screws, but oh well. After warranty is up, or I get bored I'll replace the screws with magnets.
Spring loaded 510 works well, good contact with atomizers. The 510 on mine is slightly slanted, and the finish is wearing down more on one side from tightening down my attys. The lean isn't really noticeable even with RTAs so it doesn't bother me much.
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