I have a set of ratcheting wrenches from Husky, and they are still holding strong! Had them for well over a year and have busted many knuckles and bolts, but the wrenches are still good!

(knock on wood cause' my buddy is using them for his RSX build)
I don't see a problem with mixing and matching. I'm sure there's people that have a Cattman header, Greddy exhaust, paired with Magnaflow mufflers (you get the point) and it still works.