I think I've got it narrowed down to two or three cameras now. I'm looking at a Canon 10d and a Nikon D70. I used to have a D40, is their much difference between the D40 and D70? Both the ones I'm looking at have AF. I was also considering the Pentax *ist DL b/c I like that it has an AF motor built in the body. AF is important b/c I want something that my wife would enjoy using also. And I'd like something good for motion shots such as my kids and my fish, lol. Thank you.