I wouldn’t count them as a big vendor, but I’ve only heard good things. Local shops around here charge like $99 to put a machine together, install an OS and run burn in testing. You get more choice than an outfit like puget, but less carefully tested part / cooling selection, etc.

The last I checked, the really big players tended to add value add gimmicks (water cooling is a common one, custom psu form factors are another) with reliability / compatibility issues. That’s the tier to avoid, not the Puget systems of the world.