I'm very keen on getting a DSLR but I can't decide between the Nikon D90 and the Canon 550D. I know there are lots of praise for both amongst BB members but is there any reason why I should sway towards one more than the other?

I'm trying to get the best deal I can by buying online. So far cameras out of Hong Kong seem to be the cheapest. Does anyone know of any super duper websites (anywhere in the world) I can look at?

TIA for any advice!