Hmm, I thought the models was the same all over and that each model has a sort of twin model. I am not sure I will have to look it up. I knew that the XSi had a model that was almost identical. It was the perfect beginners DSLR!
I've always wanted to try out a Nikon for a while but not have to buy one to do that... I already have a good bit invested in Canon to start now with Nikon.
I would get your kids into photography when they are ready. You won't regret it, and it's a great hobby to have!