I bought Portable 3 since I'm never going to get to play the others in the classic series. It's not a bad complement to the Technika games (especially since I'm grinding for song packs in Technika Q rather than paying). Only half the songs are in either Technika Tune or Technika Q, and those include most of the high-level unlocks (so I'm in no hurry to get them).
Also, I really like IF, and I assume they're not going to license the rights to put it in Technika Q.
Been itching for a rhythm game lately so I picked up Technika Tune. First DJ Max game for me. Liking it so far, having a much harder time keeping a beat than with most rhythm games but maybe it's just because I'm not using headphones or I'm just super bad.
Do people usually play with the rear touch disabled? It feels like I can never have my hands positioned correctly to allow for both two-button/finger notes as well as rear touch stuff.
If you enable the rear touch, you'll most likely need to support one side of the Vita with something other than your hands. It's probably not for everyone, but I use it so that my hands obstruct the screen less.
Also, keep in mind that the beat can correspond to almost any part of the song, whether instrumental or vocal. It can even be based on different instrumental tracks depending on difficulty.