First, bc7801 is correct. We have many large multi-site trunking systems here in Los Angeles/Orange County. I program my 396XT, 996XT, and now the 996P2 and 325P2 just as bc7801, entering the all TGs for that system only once.
I have considered the 436HP and 536HP to be the best scanners I have ever used, mainly because they have done P25 simulcast better than the x96XTs. The GRE/RS scanners handle that so-so in my area. I was not even going to buy the 996P2 and 325P2, but I am a sucker for new scanners, so I figured, why not.
Have had the 996P2 for 10 days and 9 325P2 for 5 or 6 days. I was expecting P25 decode quality more like the x96XTs, good most of the time, but still not as great on some difficult sites as the x36HPs.
To my surprise, I find the P25 decoding to be as good, and in some cases, better on the 996P2 and 325P2. I don't know if Uniden did much different things with the vocoder, but the P25 decode/audio quality on these new units is really good, at least in my situation.
I have raved about the 436HP being a great scanner for the last year based on its decoding ability, service search on/off, record features, unlimited memory, and hopefully upcoming analyze features.
The 436HP is sensitive, but in some cases, not as much as my 396XT. Interestingly, I find the sensitivity to be about as good on the 325P2 as on the 396XT. Add to that the really great compact size and good P25 decode, and I can see where some people may prefer the 325P2.
The 436HP will always travel with me because of its database features and record. The database is great when travel, and I don't always have time to listen to scanners all day long, so the record, and ability to replay a lot of activity when I have some free time is really important. Also, I love all the information on the display.
But I know also love the 325P2, and for portability, it really is hard to beat. So I think they are both good scanners, it just depends what your priorities are. If I could only buy two scanners out of the list below, however, they would still be the 436HP and 536HP.