tim wrote in post #4175315
I would say the photographer would be the main limitation for a while

No offense to the original poster, it probably applies to most of us!
Agreed, which is why I said "gear wise", meaning when it comes to gear, glass would be better than a higher end body. The 350d is a great little performer.
To the OP, like Tim said, we are our greatest limitations, but when it comes to gear, glass will do you much better results wise, than the body.
Plus, you already have the 350d, so you would know its functions, controls, etc. Why confuse the issue by picking up a different body?? Two camera's of the same model would be easier to operate than two different models, especially in the pressure situations of weddings, and also considering you are just starting out, seemless transition from body to body will assist you greatly.