The Dish DTVPal is THE best converter as far as program guides go. probably for everything else. the only drawback is not being able to turn the TV on or off. i think a spare Dish satellite remote will fix that as the satellite remotes are universal and control a TV, VCR, etc and they're said to work with the DTVPal without needing programming.
I don't know if the converter can 'upgrade' the software like Dish's satellite boxes but it does have the same browse banner/
EPG as a Dish
DVR receiver. i hope they come out with a dual-tuner model too, with the TV 1 or 2 remotes. handy if you have two TVs in your home.