Also look at the used markets to help make up your mind. For example if you really want a 80-200 f/2.8 zoom both Canon and Nikon make one. It costs more than either body you are looking at. You can buy a used Nikon 80-200 for $1,000 less then the price of Canon's new lens. Ok maybe you don't want that lens and you like the f/4 verion of it. Only Canon has that.
I bet even 200mm is rarely used. Most of those cheap zooms spend their life in a case. OK, now and then a use for a long telephoto might come up but if you have extra cash a fast prime is a good second lens. Anything f/1.8 or faster. You will get good low light performance and the ability to isolate a subject with shallow DOF.