It really depends XDD
1) I'd buy the DS game if it wasn't so expensive and I wasn't saving up for a console for the first game (but, basically, when I have the money to, YES)
2) If the 2nd Vision iM@S is for the PS3, a thousand times yes. If it's just for the 360...ehh, hopefully I'll have one by then, so probably.
and, to azuyuki, this game is pretty easy to play without knowledge of Japanese. There's a site with all the commu-answers, if you still want to do those...