Mike, the guys at Surf Remote have always been very helpful to me.
I bought a MX-850 off EBay (to go with my 2 MX-700's) and love it. I'm thinking of looking for more of the same. Like Socketman, I'm particular about hard buttons and their placement.
However, since I almost always have my iPad with me at home, I'm thinking about going to the Harmony Smart Control "next time".