I'm really happy with the K100D.. My dad liked it so much he went home and bought a K10D with a Sigma 18-50 F2.8 lens..
That Sigma has incredible depth of field..

I have the 18-50 kit lens and a 100-300 Takumar..
The flying shots were with the Takumar at 300mm (450mm effective on the DSLR)
The static was with the 18-50