System just finished the additional software download on my HR23-700 and it's much MUCH quicker! Thank god for that because before I would get frequent periods where the system would respond to remote input for nearly 15 seconds and browsing the guide was a pain. Was just about to order a HR24, but this update seems to have negated my need for a new receiver for now! A little irked they couldn't squeeze more time and channels into the guide pain, here's hoping one day they'll offer the option of an expanded guide.
Overall, very good job directv!