I always loved the N64 Paper Mario. I just played through it all over again a couple weeks ago. I seem to do it once a year.
I didn't even try TTYD until 2010 and I have to say it was significantly harder than the original, but obviously still a great game. I felt like the timing was a lot stricter in it. I might just suck, though. In the beginning I couldn't time anything.
SPM was also pretty good. I wouldn't even compare it to the other 2 in the series though. It's a completely different game.