I did not choose Pentax - it was more or less chosen for me:
I had my 3 35mm film SLR's stolen and the insurance company gave me enough money to buy one (1) camera. I went to the local Tall's Camera with my insurance form (they recommended the store) and asked what I could get for $xxx.xx dollars. The guy sold me a Pentax SF-1 with a Tokina 28-70mm macro zoom. I did have some history with Pentax, my cousin had gone through a correspondence school on photography using a spotmatic and my father had just purchased a K1000 a few years earlier. I knew about the quality of the brand.
I found a *istDs at Costco when I had signed up for a NG photography workshop. Since I still had the SF-1 and Tokina lens - that would give me a DSLR and two (2) lenses to take with me to the workshop. I was one of three (3) users of Pentax out of twenty two (22) participants. However, the class was more image oriented (thank heavens) than equipment. The most common comments about my images referenced the quality and colors captured.
When the *istDs and my K10D were stolen and the insurance company was willing to "replace" the devices, I could have chosen any brand. I chose a K20D and I have not been disappointed. I was really lucky since the Police recovered the *istDs and the K10D (the SF-1 and the 50mm f1.4 are still MIA) - so now I have three (3) Pentax bodies with enough lenses to last me a while.
So, I did not pick Pentax - Pentax sort of picked me.
The Elitist - formerly known as PDL
http://pdlanumimages.shutterfly.com/ My Shot - National Geographic Magazine PDLanum Images PENTAX Photo Gallery