I had been using an MX-500 for a while, then got an RM-AV300. I thought that it would be a cool remote and it was very versatile. I tried to like the Sony, but I just didn't. It seemed cumbersome, and I had to look at the remote to make most changes. With my MX-500 I can control everything without having to look at the remote. It is just so much more convenient to use. I've come to the realization that I much prefer hard buttons to a touch screen.
Jeff
_________________________
HT: Outlaw 975/7125 | Sony 55" SXRD | Roku Ultra | Sony BDP-S790 | Mirage OMD-15 (fronts) and Prestige 4 + Center Channel | Outlaw LFM-2
LR: ARC Reference 1 | Emotiva XPR-2 | Music Hall MMF2.2 | Oppo BDP-83SE | Polk XRt12 XM Receiver | Emotiva XDA-1 DAC | Sony HAP-S1 (digital audio player) | Sansui TU-217 Tuner | Magnepan 3.6R w/Mye-Stands | SVS SB-16 sub | BA VR-M90s | Audio Quest 72db speaker cable
Office: Drobo 5N running as PLEX media server
Closet: too many pieces to put all into place, I need more rooms