Mazda tranny's don't seem to be as smooth as I'd want. I also wish the clutch was a little softer. Best tranny I ever had was a 97' Prelude, or the 92 SR Prelude. Honda makes the best shifters I've driven. Well, BMW's too.
Still, if you've ever driven a Talon, Eclipse, Camaro, Mustang, our tranny's are still a LOT better.
I don't think the MP3's is the same tranny as the LX, and SE though. Not sure.