400 to 450 ???

[400exMO]

I have been consindering selling my 400 in favor of a 450. If I do this it will have to stay near stock for a while. I'm more into the mx scene as well. I'm wondering if it's that noticeable of a jump from the 400 to 450? As in is it worth it? I'm worried because the bike will have to stay near stock, and I don't want to push it's limits.

Here's a pic of the 400.

[MAD450r]

When I picked up my 04 450r it had the hrc kit installed and in my opinion handled like crap. I also was coming off an elka suspended 400ex. Dont get me wrong once I widened the R I like it much more than the 400ex.

in the woods I still like my 416ex better. On the track I wont run anything but my R.

Both are setup for MX since I love to jump both of them.