I run two Wetsounds Pro 80's with a rockford fosgate 450.4 bridged into two channels (225W RMS).
You're looking at around ~849 for speakers and I think my amp was ~ 300 bucks from best buy.
I think it sounds pretty hot. I know that sounds like a lot for stereo equipment, but in the "boating" stereo world, that's a pretty cheap setup.
There are hundreds of these posts on the board so just look them over and make the best choice for you and your budget. I know the search function sucks on wakeworld sometimes - so I figured i'd be nice and answer then refer you to the search!