Odd, I have the no-audio issue on my non-digital inputs! Speficially it will show up sometimes when I switch to my TiVo, which only has analog audio out. In these cases I just need to switch inputs and the problem will usually go away, but it is irritating.

I also use a Harmony remote (676) on my system and it works perfectly. Setting it up was a bit of a pain (they have a bit too much hand-holding which makes it hard to configure exactly the way you want when you know what you're doing, but you can usually eventually find a way around it), but once everything is set it works great. Transitioning from TiVo to a DVD is almost perfectly seamless and you no longer think about how a remote works or what the correct buttons are, you just press the "play" button or "pause" button regardless of what mode you're in and know it will do what it aught to. I've found that it works excellently with the 1070 although it does require a bit of tweaking to get the codes set up correctly as the defaults are a bit poor and, IIRC, are missing the Video 4 inputs.

As a result of this I'm also a bit unique in that I want less emphasis on a good remote. Yes, it should be usable and workable for those who buy it, but since I'm just going to stick it in a drawer and use a third-party remote I'd rather they cut the costs on it rather than try to make a really exemplary remote with plenty of features (i.e. learning).