No matching set for me either. First of all, my characters almost never wear helmets - they wear either circlets or hoods (if it's cold). And the hoods are mostly for travelling, they usually take it off when going through some dungeon, getting all sweaty from the fighting. I sometimes use armor, bracers and boots from the same set, but I also use a lot of modded armors that I mix and match with vanilla armors.
A couple of examples:
La?s Morrard, this is a couple things he's been wearing recently (around level 50-55):
http://i.minus.com/ibsuDqXcb2AdiF.jpg (+ non-armor boots)
http://i.minus.com/iWi5RtFgc3lGq.jpg
http://i.minus.com/ibiozttFsI3MsF.jpg in armor from the Unclaimed Delivery mod, belt and straps from the Northgirl Armor mod, Ancient Nord gauntlets (and boots), hood from Immersive Armors, cloak from Winter Is Coming.
http://i.minus.com/iNjFMb8o1dkhi.jpg, with scarf from the Apotheus armor mod.