This is a tough choice. I love smooth dildos and cannot say that I am a fan of girth, since it's a bit painful if a toy is too girthy (I'm a bit tight). However, I'm currently starting to explore texture and am learning that I kind of like it.
I like texture and I don't really like girthy toys very much, so I'd have to go with thin and textured. Though I imagine having a smooth and thick toy would be pleasant, as if it were textured it would prolly be a bit overkill on sensation.