Okay so I've never had the real money to actually buy it so each time I've rented the lens. Perhaps the fact that it was a rental could have effected the outcome of my images, but at this point, lets assume that I had actually bought it.
Produces good image quality, Contrary to what other people believe, I think the weight is really nice; Gives my camera a center of mass and balance
Terrible auto focus; I don't know what 17-35 you're using because this one's auto focus is horrendous