PG500 and 1000 have the same grill footprint (it's the features that change). I don't have a 500, but they tell me it's the same internal dimensions, just a bigger hopper and a warming bin I think.
Love my PG, I do smoke on it when I only have one or two items.
Don't know anyone that has a yoder, its brand new on the market this year.
This gets asked often enough, what I'd ask is what do you plan on cook on it.
For a grill, get a CB (hey, you can afford it)
For a combo, the FEPG works great. I find that the limited grilling area just means you have to swap out. Example. Start everything in zone 4 (indirect) and then bring to zone one for grilling. Swap until you get through everything.
Like a chef does he's get grill marks on a steak but finish in an oven.
Really comes down to quanity. How much of what do you want to cook. Do you want this to compete with or at the house.
Lots of questions, no easy answers, but I'll ask any you have.