I'm thinking again of getting a K-5. Actually, the kit with the 18-55 is not much different to the body only in price in the UK at present so I think I will get that combination.
However, I really am only a prime shooter. My favourite lengths are 35, 50 and 90.
Looking through the Pentax lens possibilities it seems like the 21 Limited, the 35 Macro Limited and the 55/1.4 DA.
Does that seem like sound logic given my preferences?