Warning: Gach box at your own risk.

It seems to me you have a better shot at a red sock, shoe att, or MW 30 if you go with silvers because 50-70 stuff have less color variation, and there are no reverse equipment, which aren't even very good unmaker'd, especially the armors. The tradeoff is that you get 100%s instead of 50%s. I dunno if there's more junk other than those in the silvers though.