The one thing I lack here is a quiet lens for the quiet body. The K-5 has a nicely muted shutter sound but a typically noisy AF screw drive. The best options to beat this are Sigma's HSM lenses with Pentax SDM good but tarnished by a few bad copies (make that several dozen bad copies..).
Given the advantages of silence I'm letting this one back into my lineup. Maybe someone else will take a white 18-55wr off my hands?