Even though I'm still waiting on the Tamron 90mm I ordered last week, I've started looking for my next lens purchase. I've been wanting a 50mm for a long time now, and I'm looking at a couple of lenses - the Pentax SMCP-FA 50mm f/1.4 and the Sigma 50mm f/1.4 EX DG HSM. I've noticed that the Sigma 30mm f/1.4 EX DC is in the same rough price range as well, so that has intrigued me. Anyone have any thoughts about these lenses, or suggestions for others I might look at?