I went from my Rebel G to EOS 3 to 10D and 20D. I got the lens kit with my 20D yesterday, 18-55mm and that lens is very minimal compared to the 85 1.8 and 50 1.4, I have both. I put the 18-55 on it first to see how it fit, held the camera, didn't like it immediately. I put my 85 1.8 on it and felt power in my hands. WOW. I've got my 50 1.4 on it now and got portraits last night of my family. The pictures are truly better with the prime lens. I needed the wide angle with the 18-55, but probably won't use it. I have a Tamron 19-35 and that's better.
Otherwise, welcome to the FORUM and have a lot of fun. Don't forget to buy a POTN strap for your new camera. I bought one and it's great. Makes carrying my 20D that much more fun.
SuzyView
20D, 10D, EOS 3, 550EX, lots of great stuff