Well, I traded in my 20x90 for one of these new 10x50 MX Ultras. I never got much use oout of the 90mm: just too big and very uncomfortable 40+ degrees above horizon on a regular camera tripod. Really needs a more elaborate counterweighted setup that I cannot be bothered with right now. So a swap for a more usable higher quality pair seemed to make sense. Just checked the forecast. It does not look like I'll get to use the MX Ultra on the night sky in the foreseeable future.
The binos look good. Very dark reflections off the lenses. Feels very solid (and heavy too). EPs are the most comfortable I've ever seen on binos. Individual focus is much easier to use than I thought. A lot easier than diopter adjustment that I am always having trouble with on more conventional binos. From a quick look in daylight, it looks very sharp right across the large FOV. I'll post more about them once I get to try them out at night. (hopefully before 2007)