Two things - 1) Bryston is out. I have heard two of their new amps in my system and didn't feel that they were an upgrade over my Levinson 535 (old but venerable). 2)I haven't heard the Levinson 532H but Levinson dealers and several other "national reviewers" said that they were fine but for the same money I could do better. In one article (If I have time I'll get the link), the author stated that it wasn't recommended for Maggies.
Pass is a reputable company and sounds intriguing. The folks at Coda have had their ups and downs but are still ticking and they worked for/with Mr. Pass during the Threshold days. Plus they are the OEM for a few amp designers.
I would prefer a stereo amp (space would be a problem). I also want something which will be great if/when I move to ML CLX or Magnepan 20.1. I don't know if I'll make that move but want to be flexible.