Arena mods- proper sets versus better speed secondaries.

Ideally proper sets with speed is best. I've always leaned towards proper sets and just keep farming those until I get decent speeds on those. And by proper sets I mean sets that best suits the toon with ideal primaries and of course as much speed as possible. It takes a lot of farming and I end up selling 10+ mods to every one I keep. In arena I'd much rather face toons with unmatched sets than ones with slightly slower matched sets.