I'll try to make it simple. I have roughly $2100 to spend. Option 1: Canon 70-200 f/2.8 IS II (Only interested in MKII). Option 2: Sigma 70-200mm f/2.8 EX DG APO OS HSM + Canon EF 17-40mm f/4L USM I don't really need a wide zoom seeing that I have the kit lens and a Sigma 28-70 2.8-4 APS-C version (not a huge fan of this lens, feels/looks cheap). But I wouldn't mind having one. Is it worth stepping down to the Sigma version of the 70-200 to get a wide zoom L out of the deal? Thoughts?