This is just my opinion, so take it for what it's worth. I personally would not pay much more than $3000 for a new 320 or 336 when you can find used MK2 640 for around $5,000 that's still under factory warranty. I know every man has his own budget , but there is a lot of difference in performance between the two. $5,000 is a lot of money for most people to spend on a hobby, but so is $3000. Just another option.