I've got metco upper and lower 15+ years street duty.Metco still sells there billet arms for $300ish I think if you don't need the weight jacker design, not sure if they every updated to the 3pc ball style bushings though. Still remember when GMS ripped that off and windowed the design lol.
Me, give me some Dom tubing and decent heim joints, rest I can burn my self. Majority of the adjustment I would want is in the mounting points on the chassis and axle housing, but then again most of my cars still have skinnes and no sway bar so corner carving isn't my thing.