Take a look at the Hitachi 51S500. I recently purchased the 57 after much research and am quite pleased. I would rate it "best in class". You should be able to find one on sale for around $2K.
BTW, be careful about judging the picture quality in showrooms. RPTVs ship from the factory in "torch" mode, ie. brightness, sharpness and contrast is elevated, so that they show better on the floor.
Finally, check out HDTVoice.com, a forum. It incorporates a separate forum area for each brand.
Keith