Hey there, at the end of this year I'll travel to the US (I live in Guatemala), I'll travel to Miami and Orlando (Disney, Universal...) and I'm thinking in changing my 17-40mm for one of these two lenses: the new Canon 16-35mm f/4 IS and the Tamron 24-70mm f/2.8 VC (or IS). Should I change my 17-40mm for one of those two lenses? I'll also buy the Tamron 70-200mm f/2.8 VC.
Thanks! 



