We could be talking apples and oranges here....
If you use the Zip Code/range load method, you're going to hear alot. This is a primary thing that these radios were marketed upon.
However, most users very quickly decide that's not what they want.
As far as reception, I completely agree that the 536 is picking up distant SYSTEMS .... For example, I can hear the Baltimore City P25 Phase 1 system on the 536 but no other radio receives his system from my primary location.
However, for other closer SYSTEMS that my other radios (specifically PSR500/PSR800) can receive, the reception is "incomplete". That is, it is obvious that the 536 doesn't stop on all activity on these systems. And this seems to be true for both "distant" and "local" systems. This makes sense for "distant" systems as atmospheric conditions change and distant signal strengths fade and fluctuate - but not for the "local" systems.
It is baffling as to why this is the case. If this could be solved, I'd agree that the 536 could be a great radio (ok, maybe with a couple of other minor changes). I just don't trust right now that the radio is hearing everything it should.
I'm starting to wonder what is happening "behind the scenes" in the radio signal processing. There is a slight delay in hearing voice (at least for Phase 2 voice activity) as compared to what I hear on the PSR800. That, coupled with my belief that the 536 (maybe all scanners?) will only "present" you with the FIRST active talkgroup it finds before moving to the next system.... I think lately I've noticed it sometimes stops on (and I can hear) a split second of digital noise when a talkgroup is encrypted (or the radio thinks it's encrypted). When this happens, the radio doesn't stop on any other talkgroups in the system before scanning to the next system. Given the "delay" I mentioned above, I wonder if the radio is trying and failing on decoding a talkgroup (before ever even opening up to the point you can hear something) thus moving on to the next system giving the user the impression that it never stopped on anything in that system.
After more than 35 years, the scanning hobby for me has turned less into listening and more into trying to figure out why things don't work as well as I think they should - and offering observations and suggestions for making improvements (for all of us).
As far as brand loyalty, that isn't limited to scanners. I very much prefer Ford over Chevy and definitely over Dodge. Bottom line is users will go with what works for them and their needs. Like others, I'm going to go to the vendor where things work for me. In terms of scanners, it looks like I'm going to continue to rely on multiple vendors and models to satisfy my needs.