I currently own the 24-105 f4L, the nifty fifty, and the 135mm f2L. I really can't decide between the Sigma 35mm 1.4, Canon 85mm 1.8 or the 70-200mm f4. At this point, I feel that all of them would be useful in some way! I really like the idea of having the 85/135 set up for weddings, but at the same time I love the look of the Sigma. Help!