Hi Patrick,
Nice to have you on board, sounds like like we'll get along just fine, I'm also shooting with a Pentax *istD, some of my equipment includes: Vertical battery grip, 20mm FA, 50mm 1.4 FA, 105mm 2.8 Macro, 300mm f4, 28-80mm, 1,4x teleconverter, AF140c ringlight, AF330FTZ, AF500FTZ, and the new AF540FGZ, plus a handful of other odds and ends. I used to own about a half a dozen other lenses, but they were all stolen along with my Pentax LX body and motor drive as well as a lot of other accessories, including the loss of my 50mm-A f1.2, a lens that I still miss to this day. I also have owned and used a Pentax 645nII medium format camera that I sold after going digital. I'm also looking forward to picking up the new Pentax 10 Megapixel body that they anticipate releasing this fall, it is currently planned to use the same sensor that is in Nikon's D200 and will have Anti-shake (Image stabilization) built into the body! Again welcome aboard and see you around the forums.
Kyle