I'd say buy what rollmark you like OP. Virtually everything out there nowadays is a great mid-tier functional rifle, unless you want a CHF barrel, then you're looking at more of an upper-tier built rifle.
Spikes, DD, CMMG, Aero, Larue, Rainier, Springfield, RRA, S&W, PSA, Colt, Yankee Hill and BCM all have some great shooting rifles using some very good to great parts.
Hell, even some good used factory Bushmaster(not Carbon15 model) and DPMS M4's are still out there and are good mid-tier. Remember while DPMS isn't on many people's mind, DPMS was a true manufacturer and other AR manufacturer's and assemblers bought and used their mil-spec parts until DPMS went out of business after moving to Texas, along with Bushmaster into the same building.
If one can find all the parts wanted and have the tools, one can even build a great upper-tier(ish) rifle at probably 1/3 the factory price, even though it didn't come directly from factory.