The 50.0's voice features work very well. Personally, I'd prefer to just press 140 or whatever channel on my remote rather than speak it aloud. The touch screen number buttons on the 50.0 worked fine but I prefer the number buttons on the 52.0. Not sure I'd trade the number buttons on the 52.0 for the voice feature on the 50.0, it's close. The 50.0 is quite a bit smaller in length than the 52.0 but the same width and thickness. All that being said, after 15+ years of using various DISH remotes, all with a similar layout, The creature of habit in me prefers the 40.0 to either of the new remotes. The 50.0 I used was paired to a H3. I can't speak to it's compatibility with other models.