I'm running into trouble deciding between a MV-8000 and a MPC4000. Also, I can't decide between a Triton 88-key or a Motif Es8. Obviously, this is going to be a pretty expensive investment. So I'm looking for more bang for the buck(sound quality, speaker blowing capability) and any compatibiliy issues that may arise from mixing these instrments. I've read a lot up on both in forums and on the official sites but I would really appreciate any feedback I can get from anyone that owns these, and any pointers before I decide to buy. Thanks for your time. Peace.