Chris,
What did you decide? The Sony VL900 or the RS 15-1994? I got the 1994 to replace the unlit remote from my old Pioneer VSX-D1S Dolby Pro Logic Receiver. As far as the volume punch thru, I was able to copy the amp volume keys to my VCR2 device which I can only listen to via my receiver.
I am interested also in how you like your Yamaha HTR5250 Receiver? I want to replace my Pioneer and have always been intrigued by Yamaha's sound field based on actual venues. My new receiver will be playing music more than movies.