My opinion is the best zoom is a primeand a good pair of legs. I have a 100 f2.0 and love it. Similar quality to the 85 you mentioned. On my XTi it was a bit long but I mostly shoot portraits. I think the 50 or the 28 would be great choices just depending on what you are planning to shoot. With anything longer than the 28 you will find some times it is just too long.


Happy shooting []