I personally like the 900 better, due to it's chapter skip hard buttons. The MX-950, however, is pretty much "unlimited" in it's capabilities...255 devices, 255 pages per device. You can control a whole house worth of equipment with it. If you don't need to do that, then the 900 is a great remote and I personally like it better for single-zone applications.
Thank you,
Damon DG
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