Which is better Cannon Rebel XSi 12.2 or Sony A350 14.4?

Hi,
I am a good photographer with a digicam and now plan to buy a DSLR cam.
Which one should i go for i am really confused.
Canon Digital Rebel XSi 12.2
OR
Sony Alpha A350
Note: I am just stepping into the DSLR.
If possible anyone can put up the price of both here in qatar. Online the canon is cheaper.
Go for Nikon
canon
Has to be the Canon 100% better