I just switched from the HR10 to HR20 yesterday and I'm pretty impressed. The picture and sound are better . . . on all channels it seems. Of course, it could be the upgraded sat & cables . . . but whatever the reason is, it looks good!
I greatly miss my tivo functions, but more channels and better picture are doing a fine job of pacifying my desires. For everyone who believes the HR20 is just as good . . . you're wrong. The picture is better . . . the sound is better . . . the lineup is better . . . the speed is better . . . but the ability to "time-shift" is missing and that made all the difference.
As soon as D** starts swapping spit with tivo again, I'll be the first in line.