I guess that since I came down pretty hard on D* with the sluggishness and remote response issues, it is only fair to also give credit when it is due.
The current HR24-500 NR is 0x5CB and it is working very well. Not quite as good as 0x5C8 was, but many others were having issues with that one. My overall speed of operation is very acceptable as is remote response. It does miss a keystroke now and then, but not enough to really irritate me.
The pessimist in me, after watching and/or using D* HRs tells me that D* will keep the software guys working until they slow it down again though. Probably by adding some little needed new whatcamacallit. Like TVapps, Pandora, YouTube and media sharing, all of which have little value. TVApps is flakey and has been for quite some time, but since I almost never use them and wouldn't miss them if they totally disappeared, that isn't necessarily a bad thing. And media share (AKA DNLA) hasn't ever worked real reliably.
If they just leave it alone at this level, I'll be happy.