Looking to buy a DSLR

Hey all, I am looking into buying my first DSLR and I wanted to ask for some opinions. So this is going to be my first DSLR(have two SLRs currently, both canon), although I am not new to photography, and I am not sure what brand to go with. Currently my digital is sony p200 and I pretty much know that camera like the back of my hand. I am a quick learner, so learning a new camera is not a problem.

Anyway here are the contenders:
Sony Alpha DSLR-A300
Sony Alpha DSLR-A350
Canon Rebel XSI
Nikon D60
Nikon D80

I am pretty much looking for the best bang for my buck. Thanks in advance :thumbsup:

what kind of glass do you have with the SLRs? are they EF mount? if you've invested money in glass for the other SLRs already might as well stick with Canon. The XSI is an APS-C sensor so the crop factor on the glass you have will be 1.6x