I actually tried the FX3X before. Wasn't my cup of tea. Also considered the FX40 but it seemed to have that Monoprice IEM clumsiness to its look that I didn't want to deal with.
I went with the UE200. Looked simple and frill-free. Should get here tomorrow. Picked it because it seems to be the only really cheap thing that doesn't bury the mids, like I've heard a few people say the SHE358(9)0 do.