Mine arrived earlier today. I first plugged it in and use the ZIP Code feature to get it up and running. Audio was good, reception on my house antenna was very good.
This is going in my truck, but I'm going to take a couple of days to get used to it before that happens.
After I was sure it was working, I did the software upgrade, then loaded my own data via Sentinel. Once I got that loaded and confirmed it was working the way I wanted, I played with the profile and display settings. I'm using green on black initially as it's less busy than the multi color mode. I'm using simple mode for Conventional and Trunking.
After all of that was set, I purchased the DMR and NXDN keys. I noticed that there was a discount for both keys, so that cost came in a bit under $100.00. No Pro Voice for this scanner as I don't get enough use to make it worth while.
The display is really clear, crisp, and readable. I probably won't have to use Siren in my truck any longer, which is good. It will probably look even better once I take the protective film off the display.
It took me a while to find the MENU function on the squelch knob, but once I did that, it was easy. Speaking of that, it's going to take a while to retrain my muscles to find the Volume and Squelch controls. Not sure why they did it, but that's not a big deal.
Audio is much more crisp, clear, and loud than on my 536HP. Should be really good with an external speaker in the truck. None of the problems that another user reported. It's silent when there is no signal. DMR and NXDN audio are much clearer as well, compared to the x36HP scanners.
As others have noted, the placement of the LAN and USB A connectors on the front is a bit weird. Definitely not a show stopper, but would likely be more convenient and free up space on the front for something else. The Micro USB on the front works fine for programming and virtual control with both Sentinel and ARC536. The Micro USB on the back seems to do nothing, although my computer installed software to recognize it. Uniden must have something in mind for that. The USB on the front is also a mystery.
The key backlighting could be a bit brighter and the soft key buttons could stand to be backlit as well, but neither is a deal breaker.
One Sentinel thing that has sort of bugged me for a while. I can't seem to find a way to write only the Profile information other than be deselecting all of the Favorites Lists. It would be nice to have a separate "Write Profile" function. Or maybe there is an I'm just missing it.
Overall, it's a very, very good scanner. It's a good follow on to the x36HP line.