Nikon D3100, Canon T1i, or Canon T2i?

Which of these do you prefer the most and why?
Even the smallest things matter.

I prefer canon
why?
well my dad is a pro photographer and i have just lived up with canon
so must be good if he has only bought canon from day 1

None of the above. They won't allow me to use my old manual lenses the way I want to.

I own a t1i, an excellent camera. I also have a Rebel XS another excellent camera.

I've found nothing I don't like about them