I've owned 3 digital cameras in my day.
Started on a Kodak EasyShare back in 2002 - then, absolute rubbish, never waste your time with Kodak. However, I understand that their current products are on par.
I got a Nikon Coolpix 5700 in 2003. This camera is really what I learned to shoot on, and lasted me for two years. I'm a big roster shooter, and its small buffer was too slow for my needs. The picture quality was excellent for the time, but was quickly outdated. Many pixels were "lost" with time, which resulted in orange or blue dead pixels in a dark photo. By the time I was 17, I was ready for a dSLR.
A friend of mine had been using a Canon 20D for a while, and after a bit of research I decided I wanted to go Canon. Their lens system and hardware appealed to me, so I decided to get a Canon 20D for Christmas of 2005. The only complaint I have is the sensor picks up a lot of dust, but Canon has since rectified this problem with their self-cleaning sensor system, a real selling point for me. I bought a 17-85mm EF IS lens, which is absolutely perfect. I also have a cheap 70-300mm EF telephoto lens, which produces great photos with the aid of a tripod.
My next camera will be a Canon, most likely the 40D.
To conclude, I really learned how to shoot on a Nikon from age 14 to 17. I enjoyed my time with it, but I now prefer Canon. One of my close friends has a Nikon D40X, which is nice, but not for me.
It's interesting that Canon is offering rebates to those in the UK market. Canon is usually more expensive here across the pond, and most railfans choose Nikon. I enjoy being different. 8)