Hey Ira, is photography still an out-of-body experience for you?
But I digress. A camera is a box upon which one hangs lenses. I've been shooting longer than Ira's lenses have existed. My first dSLR was the Pentax K20D I got 2.3 years ago. It was my first-ever Pentax. What drove me to Pentax were careful research and analyses that showed 1) Pentax had the affordable lenses I wanted, and 2) the K20D would give me more bang-for-the-buck and and longer happy-use life than the competition. But it was primarily the lenses that drove me to Pentax.
Many camera bodies of equivalent cost offer similar performance. Many of us feel that the Pentax K7 and Kx bodies are superior to competitors in the same price ranges. But the glass comes first. We use many more decades-old lenses than we do decades-old cameras. Bodies come and go; good lenses last a LONG time, and remain highly prized.
Before buying a dSLR system, to supplant my old Sony DSC-V1, I asked myself:
What do I want to do that I can't do with what I have? The answers were: ultra-wide, ultra-long, and low-light. Before selecting any glass and body, ask yourself: 1)
Where do I want to go? and 2)
What will get me there? and
How much will I spend to stay happy? Buying a dSLR means that you marry the lens system; and divorce can be very expensive. Fortunately,
all old and new Pentax-compatible lenses work will ALL Pentax cameras made since 1970. (Canon infamously orphaned their pre-EOS lens owners, the swine!)
So, think about the kind of photographs you want to take and make. Think about what glass will capture those images. At
dpreview.com, read the gear reviews... and especially read the user ratings, see which items get bitched about the most, and why. Look at eBay and KEH and see what legacy lenses are available, often at astounding prices. Read the
lens reviews here for evaluations of Pentax and other glass. More input, more input...