I just bought this phone 2 weeks ago and have been extremely happy with it. My only complaint is the camera. Coming from the Galaxy Nexus the camera on this phone is horrible, my 2+ year old HTC Droid Incredible takes better pictures than the camera on the HD. The only time this camera isn't bad is if your outside with sun light. Inside pictures, or any setting with a dark or dim lit room the picture is extremely grainy no matter what setting you use on the phone. There is a roumor that the Jelly Bean update will help the camera but i'm not holding my breath.
With that being said, the form factor, build quality, and battery make this the best phone i've ever owned. My biggest complaint about the Nexus was even with the extended battery I had to find a charger by 5pm. With the Maxx at 5pm if my phone is under 70% i'm surprised. In the 2 weeks owing this phone I have yet to get it under 50% before I put it on the charger at night. You don't have to turn off 4G, GPS, or sync, you can leave them all on and have it sync as often as you want, you can have live wallpaper and as many widgets as you want, it doesn't matter the battery handles it. After owning this phone I can't see myself ever going back to a standard battery.