Searay tends to get pretty high marks. Four Winns and Chaparral are pretty popular on the lake as well. I'd consider the dealer as much as the boat, this is especially true if you're buying new and want easy warranty service.
Ask your Searay question here:
http://www.searayowners.com
Check out customer satisfaction here:
www.jdpower.com
In the name of full disclosure, I have owned two Searays, including my current boat.