Have you given any thought to outboards? I know there are a lot of people here that cant stand them but they have many good points. It will take a blower motor single cat to keep up with a twin 2.5 or 300x outboard boat. With that said the outboards will be able to run wide open all day long with a lot less worries than the blower motor. Sure you dont get the sound from the outboards that you come to enjoy with the blower motors, but the scream of outboards is a pretty good tune too. You normally dont break drives (lower units) with outboards either. I like Eliminator's new 25 with the canopies and twin outboards, that boat should run well, probably 105-110. The 28 at Miami with 300's ran 101 with a different set of props than they had on at the show. At the show I was told it ran 97 as it was then.