I am considering one of these three cameras. I have been offered the Pentax K100d Super with kit lens for $300, which is a pretty good deal. If all of the technical stuff works out on that, then it seems like a good buy. I have seen the Cannon 10d body with three extra batteries of craigslist for $300. If i can get a lens for a reasonable price, then this is a good option also. On ebay, I saw an Olympus E-Volt E-500 for $250 plus shipping. This also seems like a good deal. Considering the prices, which camera would be my best bet? I also have two 2gb and one 256mb SD cards. A camera with SD compatibility is nice, but not required.