The original poster, and others, may find the QHY163M Beta Testing thread, on Cloudy Nights, worth following. The initial testers seem to be encountering some of the same things that that ASI1600 testers did. One bonus on the QHY163M is a heated sensor window (Not that I have had any problems with ASI1600 fogging or internal condensation), but it would be a nice feature to have imho.
Thread is here:
http://www.cloudynights.com/topic/55...3m-beta-is-in/