They're not too bad but I'd recommend looking into Aero Precision or slowly building one yourself using LMT parts.

With an AR-10 you're better off getting something pre built and of good quality since they can be finicky. I'd probably get a Daniel Defense/LMT/Knight's Armament if I were going gas impingement or get a HK MR-762 and be done with it and not have to worry about much ever again.

You could also get a Smith & Wesson M&P 10 for not much more than the PSA and it is a better rifle out of the box, especially if you get the "Performance Center" package or whatever it is called.

Swap out the barrel for a stainless steel Criterion barrel and put a Geissele SSA-E trigger in it plus a good optic ($1,500+ and something like a 3-15x for a .308/6.5cm) and you'd have a nice mid range setup.