Is the larger on-unit display worth all that much in the age of OSD?
I have a comment that isn't about it being larger, but rather what it displays. My Pioneer Elite shows the sound mode in large letters, and the input source is in small (unreadable from my sitting position) letters. The Onkyo 626 shows the input source in large letters, and the sound mode in tiny (unreadable from my sitting position) letters. The Denon AVR-E400 shows both the sound mode and the input source in large letters, although they are both a bit truncated. The Pioneer Elite doesn't have an OSD that shows the sound modes or input source (that I know of), the Onkyo OSD is a bit clunky but works, and the Denon OSD is nicely refined.
My preference is to see the sound mode on the front panel. I know what source that I'm watching, but I don't always know what the audio input is (stereo, DD+, other) or what surround mode I had picked last. Others might prefer to see the input source. I like how that Onkyo shows both in readable text, as well as displaying the active speakers. I always thought that Onkyos of late were pretty ugly, and when I took the 626 out of the box, it didn't change my opinion. Once I put it into my entertainment center, though, it actually looked good to me. I can't explain it, but maybe it's because I'm not right up against it looking at the indented power button (which I'm not a fan of) and other features that look a bit clunky up close, but look fine further away.