so, i am still doing some research before i purchase new equipment. i want a 5d and a 70-200mm L lens. the reason why i wasnt specific is because of what ive been reading. i did my research on the 5d mark ii and because of the high iso, the camera can shoot in near dark conditions. with that said, i was thinking about pairing that camera with the 70-200mm f/4 is. i was wondering, could or should i go with the better lens (2.8 is) and get the original 5d used (which i can get) or get a used copy of the 5d mark ii and pair that with the f/4 is? basically, should i go with the better body and really good lens or should a go with a good body and a really really good lens? thanks in advanced!