Personally, I would take the T1i and spend money on glass. The D90 would be decent also simply because it does have a vetter AF system than the T1i.Every test I have seen put the T1i just slightly ahead of the D5000 partly due to its HD video capabilities. As for 70-200, if you are going to mainly shoot birds and distance subjects, a 200mm is not going to cut it. Its a great lens otherwise, but you will ALWAYS wish you had more length ( not to mention that the 70-200 f/2.8 is going to be expensive for something you don't really need ). If you will be shooting out doors a 70-300 should work very well, and get you an extra 100mm. Pair it with a Kenko Pro300 1.4x Teleconverter and now you are at 672mm ( if you take the cameras crop factor into account )