Thiel CS3.6 Amp

I currently own an older Bryston 4B amp driving Thiel 3.6 speakers in a room 12x25' that opens into a kitchen & dinning area. The rm has poor acoustics with a lack of bass. The bryston and thiels sounded good in a previous house with plenty of bass. I listen to allot of 2 ch music, but am planning on setting up a surround sound home theater system with an outlaw audio (990) processor and Rotel 5 ch amp (585) to drive the center and back speakers. I am looking for a velodyne DD12 sub and a thiel center speaker. I would like to upgrade the bryston amp with a used up to ~$3k amp to improve the 2 channel stereo listening. I am considering a Mcintosh mc352 or a classe amp. Any opinions or recommendations.