My Yamaha htr6030 works but does not have HDMI.
What's your motivation to move to HDMI? Convenience, or audio quality? HDMI is handy, but with your setup, digital audio (either optical or coax) wouldn't likely sound much if any different - and that is in no way meant to be an insult. The new lossless codecs are nice, but I'm not sure that I can tell a difference on my setup.
As for Pioneer, I'm a fan. One simple reason - it was the brand of the first AVR that I bought with auto equalization. I LOVE that feature. The Yamaha that I had before that always sounded too harsh to me, but it was likely the room acoustics. The Pioneer helped immensely with that, and the next AVR that I bought was also a Pioneer. I can't say that I wouldn't love a Yamaha these days with YPAO, though...I just don't know.