someone else was trying to compare a 40D with a D300 the other day, I'm thinking, what !.
On one hand, it'll suit Canon to suggest a 40D is actually comparable with a D300...and sooo much cheaper too, but its not that simple, aside the fact the D300 isn't even available yet and I'll be pretty gutted if it doesn't spank a 40D from here to the otherside of Christmas.
The real problem is, it suits these 2 manufacturers to place their products between each other so they don't actually compete on a one v one basis, that would kill the golden goose and just be a brutal price war.
so like everything else its horses for courses, personally I cant see any further than the 2 nikon bodys, they are the most up to date technically advanced iminently available bodys (almost) on the market, and no amount of old 5D tech waving can change that.
Canon will just have to suck it up till they get a respose together, its been a long time coming and the squirming in the other camp is beautifull to watch/read...between the lines:mrgreen:
You need to decide what your priority is, full frame or not, I sense the D3 is not the money you want to spend, so that just leaves 5D..
I dont know anyone disappointed with a 5D, weather sealing or not.