I used Double Play with my HR34 this evening and discovered something cool. When you switch back and forth between the two channels, you don't get the big banner across the top of the screen. You just get the small progress bar on the bottom of the screen for a few seconds. With all the HR2x DVRs I've used (I don't have a HR24 so I can't speak to it), the top banner appears each time you switch. This always seemed unnecessary to me. You basically know which channels you are watching. The program information on the progress bar is enough to tell you which show you are watching, which is all you need to know. Nice little tweak in the software, DirecTV!