Tin Bird- let's set the acoustic concerns aside for a moment. Virginia Beach from a temp standpoint is a heck of a lot nicer than here in Minnesota but you still have about 6-7 months where the temps are coolish. If your home is on a slab and doesn't have a basement, my concern is that the tile floor is going to be rather cool during those winter months. For that reason alone and for peace at home I'd consider staying with carpet, however one other option to think about would be a wood floor. Have you talked about wood? Acoustically it may not be much different than wood but they are beautiful and a heck of a lot warmer than tile. There's my 2 cents and I'm sticking to it.