I want to think about this some more, but I will give you some quick thoughts I have - for discussion purposes.
Of those
three choices I like Pro the best. My only problem is that Pro generally would mean a slightly more advanced or feature rich edition of a model. I don't think something like version 2 would work as you are really taking a huge leap forward. Maybe use an acronym - something like Infinity NT(New Tech), or BUZZ ER(Extended Runtime) ... I'll keep thinking. lol
VVPV - (another acronym

) You need another name. You can't get Trademark protection for it. You couldn't prohibit anyone from using the term "vvpv" as it is in common usage among those "familiar with the art". You don't want someone coming along selling a "crapbox vvpv" and creating confusion.
I'll keep thinking but I am sure others will come up with some brilliant ideas!
Good Luck!