I have thought about Sullen, a lot, back when I was trying to decide what I was going to do with FallingApartArt. They have solid design concept now - skulls, lady heads, and script. If you like those things, they're your t-shirt designer. Personally, I like to mix stuff up, but that's my taste. I do like their cut n' sew stuff, but it's not that different than Lucky 13.
PS- I'm about done with skulls- time to bring back the babies :cool: