Actually, I change my answer, everyone's gonna be going for tier sets, obviously. One may be more popular than the other, but for something really unique, farm raid drops that look like other classes' tier sets. For me, going with t5 warlock look with raid drops.
^^^Warlock look basically
http://www.wowhead.com/item=32471 main hand.
^^^Just weapons I like the look of basically, and the dagger matches, might change the off hand if i find something that matches. Main spec is shadow, which is why I'm going with the dark look. Currently looking for a good helm now. Just ideas though. I will be having a lot of fun with this for sure though. Thank you Blizzard