I picked up a 436 two days ago, but to be honest haven't had the time to really put it thru it's paces yet. Initial thoughts: very confusing to use at times when you are accustomed to previous generation scanners. P25 audio is very good, although the max volume isn't nearly loud enough compared to my Pro-106.
I'm not sure I'm sold on this whole database thing as I have a lot of questions as to how it all comes together. I hope to spend some time with it over the long weekend and get a better feel for it.