Just like skis, there's a bunch of people saying shit about gear they've never used.
I use Canon stuff. I've got L glass. I'm happy.
But, I've never shot with Nikon. So I really can't give anything more than an opinion.
I like Canon because they're always leading the cameras...... like the D.rebel before the D70, the 20D long before the D70-whatever-the-new-one-is.
The only camera Nikon pulled off (that I've been following) well was the D100, which they've failed to upgrade for years.
I really don't know too much about Nikon though. I don't know shit about all these VG-AR-DC-Nikkor whatever lenses. Which is another reason I like canon.
All the lenses are either EF of EF-S with Canon. USM is a good drive motor. L is good optics. DO is shit I don't need. IS is stabilization, which I don't need either.
Now, go on http://www.bhphotovideo.com
and do your research. And then buy what you think will work better for you.
- "I like slurpies." - rebel