Chris J.
Addicted to ArboristSite
Go buy the 661 as well, run both, do some vids for us to compare times, then sell the one you don't want to keep.
I understand your point of making a comparison.
But......what would the depreciation be on the MS 661 or MS 660 once it's been fueled and cut with? To avoid losing money, that would require locustman to have a buyer lined up willing to pay what he paid for either saw, or a very understanding dealer, or a store with a very liberal return policy.