I was checking out the specs on a D100 recently and it still looks like it could compete with the D70s, D50, and even the D40. It is obviously behind when it comes to the D200 and probably the D80 and maybe the D40x. I may be way off base here but it led me to many questions that hopefully you all will be able to answer. Is the D100 still a viable option for someone getting into DSLR photography? How does the AF compare? What about ISO?