IMVE is kinda barren but fun. Makes the most of what it has. Brutal though. Very close to MET and Tron though.
TSPP is like a puzzle. I wish it had more "flow" and I don't even me 1-ball flow. I mean "Multiball flow". Great games like SM, LOTR, ATM and MM have that. I tend to REALLy like games with that (I'd rather have I500 than IM. It's tougher but better flow).