...where do you start with the look you're going for?
I find I tend to always want to match what I'm wearing to a weapon/offhand combination where possible (as opposed to liking the look of a set and trying to find a weapon to match), i.e. for my ret Paladin, when she's got a 2h sword/mace, I'll use the Twinblade of the Phoenix and set her up with a Golden Avenger-style look (T16 flex head, shoulders, the rest Lightbringer set), if she ever gets the polearm off Thok, I'll swap all that around and match up the set to fit Hellreaver (one of the best polearms ever, IMO).