I sold my M8 last year, it was a nice radio though a bit wierd feeling. I didnt use at least half of the features so I figured something like the MX would have everything I needed. As long as the quality is still typical Airtronics and the features are good enough for the sedan class (cant imagine needing anything else personally) I'll pick one up.
I searched ebay all day long but I'm in the middle of a dookie samiche sorta. I'm in Japan and can only use the 27 and 40 band, most on ebay where 75. Most were also radio only, which doesnt bug me to much but I need to consolidate shipping and couldnt find a receiver from the same sellers to make it cost effective.