I've been extremely happy with my new Canon 6D over the last few months. However, I'd like a light (weight) prime to use for shooting family/everyday. I've been using an old Tamron 28-75 2.8 on my 6D when I need wider than my 70-200, because my 17-55 2.8 does not fit on full frame, and the focusing of the 50 1.8 is driving me crazy with the noise and hunting.
I'm interested in an option to replace the 50 1.8 as my lowlight and everyday lens that is still lightweight to throw in a bag and not add much weight to my 6D and 70-200 4 IS. Wider than 50 is an advantage too for indoors. In Canada, this is much of the year for me! I know a prime should be better image quality than my Tamron zoom. I've looked into 28 1.8 and 35 2 IS, and I think I'm leaning towards the 35, but I'm not sure if I'm missing anything about quality or otherwise that's important. I like that the 35 has the same filter size as my 70-200 and 100 macro, because they can share my polarizing filter. Also, I've seen that some people have both of these focal lengths, and I'm not sure if it's just because they like primes enough to buy lengths so close to one another, or if one wasn't good enough so the second was purchased. In particular, I'd love to know from anyone who has used either lens what the focus time (and noise) are--is it long or distracting? I don't want to buy another lens that annoys me as much as my 50 1.8 (although, I realize for the price it is pretty decent!). Any advice between these two lenses is appreciated! (Both budget and weight have ruled out any f/1.4 options for me!)


