Ok, I don't go in for any of this creepy 'street' stuff, I don't tend to do 'people'. I think the K5 is the ultimate camera (so far) for DR and general IQ, so is ideally suited or landscape photos.
Question: which lenses? Let's limit ourselves to 3. Zooms are allowed.
I already own the 18-135 and 43mm ltd (which is fantastic). So I guess I am allowed one more ... hmm let's think ... 15mm? 21mm? 12-24mm? 35mm macro? 70mm? 300mm?
I guess the answer is 'it depends on whether you prefer wide views or close up views'.
Lordy dordy ...