| Don't dismiss zooms outright, dismiss bad zooms. Don't forget that the majority of modern photojournalism (and wedding photography) is done with zooms - good ones are capable of producing outstanding images. That said, the Pentax system's most interesting lenses are its primes - Pentax is one of the only manufacturers doing anything interesting with their fixed-focal length lenses and the Limiteds are just lovely.
It's heresy to say it here, but I think as a commited Pentax shooter I have a right: Pentax would not be my first choice for wedding photography. Given a sufficiently large budget, I think the ideal wedding system would be based around 2 or 3 Nikon D3s. The D3 has the best combination of low light capability and all-out performance on the market - combine usable ISO 6400 with an f2.8 VR zoom and you have a formidable and highly versatile setup.
Matthew |