I really want to get this one since the last SMB game I played on a home console was on the NES times... But I've heard this is basically the same as the DS version (which I own and love) and the Wii version (don't own but I've played it as well). I could get it for around $40/$45... Do you think it's worth the price? I doubt it'll ever go down to budget price, since I still see the Wii version priced as much as $50.
It's worth $40. Do you like Luigi at all? You could also wait for the retail version of New Super Luigi U that's only $30. You seem to be playing a few games at the moment though. If I were you I would play what you're playing now, wait for Pikmin to come out, decide if you're going to get that (I bet you will) and then use NSMBU/NSLU as a bridge when there's a gap in games you don't like.