Personally I think they're all good, and the only reason for a brand name is resale. Until you get into the really good custom ones made by Scott Milk and others, those are nicer for sure. I've only had trouble with one lower that was out of spec, and the manufacturer took it back and sent me a new one along with some goodies. I currently have a few made by Delaware Machinery bought from Rguns for $65 each. A couple friends and I went together on 12 of them, and have put 6 together so far with no issues.
If on a budget, that's what I'd do.