I am already considering trying the D300 because it offers what I have been waiting for Canon to offer and still doesn't in the 50D:
- Better feeling grip
- Wireless Flash in body
- Weather sealing
However, I too, think that once I try Nikon, Canon is going to get back into the game (they've been hit with the Nikon bat and then one with spikes too many times). I also like Canon's lens lineup better since it has more options and you can easily tell which are the pro lenses.
Canon has been so stubborn on the "pro" features like weather sealing: 40D has 2 weather seals so they can say "improved weather sealing". Pentax includes it on the $1K body. They are so afraid to canibalize their own line that Nikon and other are helping them out. Also, my 30D seems to be providing more noise in my images in its "old age". Why?
So for now, if I do try Nikon, I'm hanging on to my Canon gear so I can go with which one I like best after trying both. You don't know unless you try
