Originally Posted by toro618
The map switch can make the 450 behave like the 390? I beleive they both weigh the same.
Yes, but it can't make the 390 feel like the 450 when they are both on the high setting. The 390 on high feels like my 450 on med IMO.
Some report that the 390 feels lighter in the tight stuff. The best thing to do is find a dealer or somebody that will let you test ride them, that way you can decide which is best for you.