does the 32' ss have any more head room in the cabin than the 28' or 32' dominator?
i'm 6'4" and like everything about the boats except that i can not sit up straight in the cabin

Yes, it has quite a bit more.

Hailing Dave - can you give the exact specs for headroom in the SS compared to the old model?

The head room in the SS Dominator is excellant, it's right at 5 feet, a little over 7 inches more than the Dominator. I'm right at 6 foot tall and can stand up tilting my head. The enclosed head also offers quite a bit of room as well. Sitting in the cabin is awesome, even at 6'4" you'll certainly like the room in the SS cabin.

Dave, did you get some platform shoes lately?

I saw it in Miami and that's the striking difference enclosed head aside. Definitely meant for the taller folks besides the bottom and freeboard. Otherwise the upper deck is all Dominator.