I just had to try out a 536 to see just exactly how it compares to my HP1. I was a bit hesitant for a 436 due to several of the things I'd read about it over the last few weeks regarding a few weaknesses it has. I spend most of my time in my office at home in front of the computer as well as the scanner, so the portability wasn't much of a compelling reason to consider it. I chose Amazon due in part to their easy return policy just in case I'm not terribly impressed. I'll be setting up some Favorites as well as seeing how it does on sensitivity and sound quality and such. If I keep it I would most certainly add the DMR to it. I'll keep you guys posted as to my reaction to it's overall performance.