My first DSLR was the K100D. My avatar was taken with that camera. I sold it when I bought the K-x. I don't plan on selling either of my cameras, the K-x or the K-30. But some lenses have to go. I prefer those either with an A on them or the DA FA F lenses. I have two DAs and two A lenses. I also have one Sears/Samyang 135mm M f2.8. I like it though it's not and A lens, it still works pretty good. And sharp too. I did a single in challenge last year with it, and I was happy with the results.
I have a Sigma DL Macro 70-300mm I paid $47 for on KEH. Of course the Macro is something like 1:4. But does a decent job of far away subjects, like the dragonflies that refuse to land near me.
I have one Pentax 50mm f2 m lens, and one same A lens, then I have a Pentax A 28mm f2.8 I bought here on the MP. I still need a 35mm A lens, but not in any hurry to get that one after this last purchase, lens buying will be on hold for a few months.
I'm on a limited income. I had saved the money to get the Sigma 105mm f2.8.