I have a 60D and I was looking for 1 lens to keep on it. I shoot just about everything but more people than anything else. I was looking at a used canon 17-55 but I also saw a used 28-105L for the same amount. I really like the 17-55 because its 2.8 and I'm not always in the best lighting. Both were about 700 of should I go for a new Sigma 17-50? I'm open to suggestions.
Thanks


