I am not an owner but I did Performance test the 500 and I never got the..."it's just not big enough" mentality.
Now, zone one is grilling, it is that simple, even set on 170°, it is going to be 400°, so it is out for anything but grilling...
But zone 2, 3 and 4, to me they are usable, specially if your cooking is under 250°. Larry disagreed with me regarding zone 2, he agreed about 3 and 4...but everyone cooks differently! So I set the controller on 185°, zone 2 is going to be about 235°, zone 3 is gonna be about 205° and zone 4 is gonna be about 190°. Not huge differences. Is it really that hard to move meat around every 3 hours? Are you gonna be cooking 6-7 racks for 12 hours? Are you gonna be cooking 35lbs of meat at one time every week?
So, there is more room in the PG500? I honestly thought you lost half of the space to the “open†section for flame grilling. I didn’t think there was a flame diffuser there
Years ago, before I had any real plans to upgrade beyond my Traeger Jr, and a Traeger Texas I had bought used, I regularly followed pelletheads, and I was always a little mystified by the PG500, it just seemed small based on dimensions. But after owning one I have come to understand a bit better with regard to it's size... The only clue I had , before I bought mine was something Fast Eddy himself said. That basically being , you can't really just go by the grate size alone when comparing the size of a PG500 to other grills, the reason for this is, because with the PG500 you can use every single inch of it's indirect cooking area, without any hot spots, etc...
Traditional pellet grills and those like the Q450 get a lot hotter around the front and back edges, this is where the heat from under the drip tray gets blown up around that gap between the front and back walls and the edges of the drip tray. In terms of really even heat, you looks probably close to 3" of space on the front and back sides of the cooking grate. I mean, technically you can cook food in those areas near the front and back, but it's a lot hotter and a lot different sort of heat than you will get near the center of the cooking space. Q450's cooking grate is 19x24" if you subtract 3" in the front, 3" in the back you end up with a effective cooking are that is roughly 13x24 ( 312 square inches ). Fast Edddy's area, 18x18" totals 324 square inches, which is ... well let's just say the two have very similar amounts of ussable space on their primary cooking surface3s when you really take into account the way heat flow works in the two grills.
Q450 still doesn't have a upper shelf, I really can't figure out why they haven't managed to get that option yet, by most accounts the upper shelf bracket mounting locations are already in the grill's design... but the reality is it doesn't currently have a upper shelf... PG500 does. I have cooked a 19 pound brisket on the upper shelf of my PG500, in some ways, the upper shelf is my preferred location to cook a brisket on the PG500, but I can also cook at least one 19 pound brisket on the bottom area too. I haven't done it yet, but I'd be willing to bet I could cook 5 large pork butts on the 18x18" cooking area and two on the upper shelf... I could cook the biggest turkey anyone could ever find on a PG500, there's a very large amount of space between the main 18x18" grate and the area above it.( I forget the exact dimensions...
The one thing I wish my PG500 had is multiple shelf cooking system option. I enjoy making things like beef jerky and , while I have made like 12 pounds of jerky at once in my PG500, I know there's more room that could be exploited if there was a nice rack system that could fully utilize it's vertical space. I figure you could fit probably 4 racks that were 14x18" above the 18x18" cooking grate, if there were nice rack holding brackets available. I have used my own methods to make use of the vertical space, but I know that a well designed rack system would turn the PG500 into one outstanding smoking machine... I should design my own and make it happen , but I just never found the time to do it, and there's probably no way to actually make a profit trying to sell them myself to other PG500 owners... but still, if there was such a system available... well , I'd be the first one in line to buy it.
But anyway... it's very easy to underestimate the amount of space inside the PG500... until I actually saw one and used one, it wasn't very obvious to me just how much space there really is.