Yes you say you want hte magazine cover type of look, but all those lenses you mentioned are quite entry level performers (with the exception of the 50mm primes). If its between those 3 I would personally probably lean a bit towards the Canon 50D, but really for that great look the lens will matter more than which of these camera bodies you pick.

Like Doug mentioned, maybe you should stick with a lower dollar body and spend that extra cash on the lens.