So recently I bought a PS4 and since it has remote play, one of the things I adore, I've been interested in getting a Vita. Not just for that but also for Rogue Legacy and The Binding of Isaac:Rebirth on the go. The thing is, memory cards for that thing ain't cheap and there are no aftermarket brands either so my question is: If I wanna get a used Vita, which model should I be on the look out for (since there's 2 AFAIK), what other cool indie games are available for it or games worth playing at all? If I wanna purchase a bigger memory card, which place is sells them the cheapest? Should I hack it if I end up buying it with an older firmware? Will I be able to play it online without compromising my PSN account or console? Thanks in advance.