i tried tokina 11-16, sigma 10-20 and i own a rokinon 14mm. 10-20 gives you obviously the best range which can be fun while taking pictures. 14mm is pretty cool and wideeee, not really sharp in corners tho, normal for a uwa lens but didn't have that much of a problem with the 11-16. Overall, my favorite one is the 11-16, for its sharpeness, the 2.8 aperture, reallly good uwa lens for aps-c sensor camera. Would go for it.