Best speakers for my system

I'd say you need to go to lots of different dealers and listen to lots of different speakers. Your needs do not really rule much out (other than panel speakers due to the low ceiling), so you need to figure out what you like. Some stuff to listen to in addition to stuff already mentioned - Harbeth, Devore, Verity, Sonus Faber, Avalon, ProAc, B&W.

I'm a bit late in response, but I can't add anything about Ckoffend's question about D38R with Levinson electronics. I was simply listing brands of speakers that I've heard in the OP's price range, that would fit his (not so limiting) requirements. I actually am not a huge fan of Proac's - all I've heard critically, though, was a D28 driven by Ayre electronics. It didn't grab me, but if you're shopping in that price range, you owe it to yourself to hear Proac's and see if you like them, because many do. B&W are the same - wasn't my cup of tea, but lots like them, so you need to do your diligence to make sure that you make a buying choice from an informed perspective.