I've got the PG1000, and I'm convinced there's not a better design out there. The indirect side is truly magic. Very even cooking, top and bottom, excellent smoke flavor. Coming from my two GMG's (Jim Bowie and Davy Crockett) there is just simply no comparison. The charbroiler side provides restaurant-quality heat (heck, they do build them for restaurants!) which means I can turn it up past the point of usability if I wanted. 600° on the dial usually results in right at 1,000° in zone 1. No grill grates, no flame-zone baffles, it's just ready to go, all the time.
Has an ash tray that makes cleanup easy. When you want to vacuum the fire pot, you pull the grate and the little metal tent over the pot and you're ready to clean. Very fast and efficient. I can get it cleaned out in about 2 minutes as opposed to 10 or so (and a big mess dealing with the diffuser plates) with the GMGs. It also does a very good job of keeping its burn pot clean. Maybe I clean it about every 120# of pellets?
People do ding it for the small cook area of the charbroiler. I just use the warming drawer (which is very handy by the way) to hold everything while the next batch goes on. I can fit 6 burgers in the charbroiler, or 2 big steaks, or 3 less than big steaks. Easily 4 NY strips, but you'll be limited to 3 ribeyes unless they are small.
This is max drumsticks in zone 4
Chicken cooked at 425° indirect is amazing:
Chuckroasts good too
Country style ribs
STL Ribs
And of course, steaks
The real trick is learning how to use all the zones. That's what really expands the size of the grill. If your charbroiler is loaded, stick stuff in zone 4 to start getting it up to temp, then you can just finish (a la reverse sear) in just a few minutes.