I went with those simply because they fit, the cutout is round, and the hole will take a 6.5 coax. Cutting a square hole in a boat for a speaker borders on insanity as far as resale value ect. They sound great, I will probably add a super tweeter they are a little soft up top but other then that exactly as expected crystal clear and retarded loud. Not as harsh as a titanium driver and not as smooth as a dome tweeter. Overall good sound, and unbelievably loud. I pulled wires while I was at it to throw a sub in the cabin, a project for another day.