What about Michelin Cross Terrains? I had those on my old Lexus GX and thought they were extremely quiet with a great ride.

I'm in the same situation with my run flats. After 22k, they're almost shot, and they're loud and stiff. I hate 'em. Not sure why anyone would want them. There's no way that the alleged benefits of RFs offset all their negatives IMHO.

EDIT: Doesn't look like they make the cross terrains in that size.