Ok, here’s my opinion. Take it for what it’s worth... lol.
With you pushing your budget a bit higher $750ish, and based on the types of proteins you mentioned you cook most often (chicken, plate short ribs, ribs and pork), I would absolutely go with the Grilla Grills Silverbac. I really feel at the 750ish price point you are going to be very hard pressed to beat it.
As far as “grilling” ability, with the exception of steak, which you didn’t mention, I think you’ll be quite pleased with the high temp indirect results for things like chicken, burgers, sausage, etc. It won’t be a “searing machine” but IMO you don’t need that power for anything other than steaks. High temp indirect heat produces really good/moist results.
As far as the PID questions, Grilla now offers their dual function controller where you can set it to PID behavior and it’ll keep a tight temp range, or you can turn that off and let the temps swing a bit more but also produce more smoke. Kinda cool.
As far as WiFi, that’s up to you... I personally love it on my MAK, but if I had to choose between WiFi on a lesser quality pellet grill vs no WiFi on a higher quality pellet grill... hands down I’d give up the WiFi and go with quality.
If you do go with the Grilla and decide that you still need the searing power from time to time, then personally, I’d recommend a small secondary cooker... something like the Weber Jumbo Joe or a small Weber gas grill... or even a small Blackstone griddle... something that can be easily stored away when not needed. But even then, I have a hunch that the Grilla will see 99% of all cooking duties.
Just my 2 cents