It all depends on your shooting style and interests. I find the 50mm f/1.4 a little long on my full frame EOS 5D and find the 35mm f/2 much more usable for candids. I would guess on a crop frame body such as yours you might want to look at a 28 or a 24mm alternative.
The 50mm has much better image quality than the 35mm, in terms of sharpness, contrast and bokeh. Not that the 35mm is bad, but the 50mm is awesomely good. Also the extra stop of light capture on the 50mm makes a big difference in low light situations. But despite that, the 35mm spends more time on my body than the 50mm.