Hello this is my first post to this website. I recently purchased a 6d and am on the fence between 2 lenses. I currently have a 70-200 2.8 sigma os, and am borrowing a family members 17-40l in the meantime. I upgraded from a rebel t3i which i still have and plan to still use. I take portraits, occasional street photography and would like to get into weddings at some point. The 2 lenses I would like to get are the sigma 35mm 1.4 or the tamron sp 24-70 2.8 vc. Id like to get both in the future but will have to settle on one for the time being. Which one would I be happier with result wise?