Katemann,
Your response sure came at an interesting time. I have just decided to go for a quality lens even if I have to wait a bit to purchase it. I am enjoying my XTi. I am a desert dweller but recently had occasion to visit the northern Everglades near Palm Beach. Wonderful place, still quite wild, full of life of all kinds and the birds! Learned a ton about shooting a variety of subjects from sun up to sunset and all points in between. Hope you are enjoying your XTi as much as I am. (Had to pull out the instruction book a few times to handle the latitude of images I attempted.)
Thanks for the response.