I primarily shoot 35mm, medium format and large format. New baby\ncoming next month so its time for a dSLR.\n\nI'm considering the Pentax K20D, Canon 40D, or upcoming Canon XSI.\n\nMom has an old Canon EOS film camera she no longer uses. She would\ngive me the 28-105mm USM lens and the cheaper 75-300mm lens she has.\n\nPentax K20D advantages\n\n+ More detail and usable megapixels (15 megapixels vs. 10 and\ninitial test results show that these extra megapixels are quite good)\n+ In-body IS works with older, used Pentax lenses (like a 50mm I\nwould buy)\n+ Extensive weather-sealing\n+ 18-55mm II kit lens is better than most other kit lens. I would\nprobably at a 50mm prime.\n\nCanon 40D advantages\n\n+ Free 28-105mm USM lens. Doubt I would ever use the 75-300. What\nother lens would I add??\n+ Better/faster low-light AF\n+ Better FPS (not important to me)\n+ Broader selection of lenses (probably not be important to me)\n+ Proven, well-tested and reviewed camera\n\nCanon XSI advantages\n\n+ 0-350 cheaper\n+ Lots of bang for the buck\n- disadvantages: "plasticky" body? pentamirror vs. pentaprism?\nwould order site unseen/unreviewed?\n\nLooking for thoughts/opinions to help my decision.