Dangly drops are my favorite. Things with movement - swingy. No posts - just wires, lever backs, that kind of thing.
I'll wear hoops, too - I like them tapered or faceted or something other than just hoops. I just got some cool rose plated stainless huggie hoops that are fun.
I like gemstones in the earrings, but it's not required.
My piercings are not even (what do you expect from ice cubes and a sewing needle without Mom's permission?) so I think it looks better on me, than studs. Plus I just find studs boring (for me) and I feel like Frankenstein.
Cogito ergo sum