Originally Posted by Scarbo

I also tend to agree with the 17-50 recommendation; and it is probably what I would choose as well.

But . . . how about this? If you feel the 50mm lens would yield the very best quality, take it only. Michelangelo always said that the art was hidden in the rock and that he merely liberated it. His art was one of subtraction, therefore. Let your 50mm--and its limitations and possibilities--be your rock! Take the images that the lens will allow you to take, concentrating on image quality--yes, at the expense of some flexibility.

I've always found this to be a fun challenge. Also, I'm an inveterate weight-weenie/minimalist and hated carrying around multiple lenses when I'd go out on photo shoots.