I love my super light, high revving 310 IN the woods. It's not made to "drive around", it wants to go fast and climb/ jump stuff.
My 610 is my "exploring" bike I guess. Rides awesome, lots of power, but the extra 60lbs is very unwanted when I have to pick it up.
I hav two buddies with plated WR450s and I've had 2 Husky 450s, they are a good mix bike. Still have the higher maintaince, but as soon as you get in something nasty, you don't care about the easy oil changes and valve check.
For the $$$ your talking, I would deffintly buy two, three year old bikes. Otherwise you are compromising something.
'09 Husky 510 TE/SM
'07 Husky 610SM SOLD
'96 Honda XR250/300R (plated)
'96 Honda XR600R (plated) FOR SALE