I am looking to upgrade my D40, which I have had for about 3 months now. The lack of an AF motor is really frustrating, and I want something slightly more durable. I was either going to go with the D50 or the D70, but while I can probably afford it I'm going to go with the D70. The question is, what does the D70 lack that the D40 has (with the exception of smaller screen and size)? What are the advantages of the D70 over the D40?