Upload & Sell: Off
I would go for the 28-70L in a sec... I got mine for years and the pictures are so sharp... Last Year, when visiting New York, my bag was opened and the lens plunged hard from 5 feet on the concrete at Times Square and bounced a few times... Took it back, tried it and work since as nothing ever happened... just a little knock on cap... I broke my 15L, my 35L and my 16-35LII with only tiny shocks...
This lens is solid as a rock and accurate as hell.. Think I would look for another one if mine wouldn't work anymore.. or may be try to find a place where they could perform repair.. So cheap to find used ones ..
Good luck Gheller