Replying to Canon Rebel XSI or Nikon D40

Alright so I am looking for a good dslr camera to start out with and need some help.  I have searchbarred and I think have narrowed it down to two but cant choose.

Canon
https://www.newschoolers.com/web/forums/readthread/thread_id/447621/

Nikon
http://www.bhphotovideo.com/c/product/471716-REG/Nikon_25420_D40_SLR_Digital_Camera.html

I can handle either price but I don't know what would be better to start out with.  I am mainly going to use it for skiing.  Thanks