Yes, please read that thread and the others that are linked from it. And the other forums that are listed in it as well.
I would be stronger than Mr_Saginaw and saw no, but that is my bias. I'm generally a careful person. I wouldn't want to risk screwing up someone's wedding because I purchased a consumer grade SLR instead of a professional grade SLR. I would feel so bad... I'm not sure I have the words to say how bad I'd feel.
Boy, do we both jump on questions like this.