Initially I was looking at about $800, but that was based off the decent deal on the 7D. I did look into the IQ on some DPReviews, and the difference between the 7D and 100D appeared very small, almost negligible, which indicates to me that the 100D would be a huge upgrade over my current camera, and I'd not be out of all that much money then. My one problem with the 100D is that it's tiny. Reviewers say that it's okay though, so I might just go for that one.
I wanna stay with Canon because of the lenses I've got.
Nikon doesn't know what the fuck they are doing these days anyway. I like Canon lenses better too. If you can swing it, I would recommend going full-frame. Having a 50mm be a real 50mm and not 70mm is better for a number of reasons. I would spend the extra cash and plan on using this camera for a while.