i tried to read thru this article about different sensor sizes, etc.. and i need some plain english. now we (my business partner and i) use a pair of rebel XT's for all our photographic work, 90% of which is studio-based staged cinematography type work, 10% of which is some product photos, portfolio shots, etc.. the bulk of our work is pretty abstract and experimental, much of which ends up in posters and printed work, etc. so while i do not feel i am really being limited by the rebel, i have a "fiscal opportunity" (thanks to a very, very good accountant) to buy a new body at a very steep discount in 2008 and I am wondering what the general advantages would be in going into a full-frame camera. (for the record, i am staying in canon as thats what we have for glass.) my normal inclination would always be to get better glass but i am curious if the FF might be worth it as well/instead.