As said, I don't see why you would need another mid-range zoom. You have a great collection of glass, and maybe you should start considering acquiring a fast prime instead of a mid-range zoom.


A second body could be nice, but you may not feel this to be necessary. You could save the money to move up to a full frame camera, sell the 17-55mm f/2.8 and replace it with one of the lenses you mentioned.