I have the single phase KF700 saw since 2005 and have never run out of power.... then again I don't cut anything really huge and hard with it.
It handles 2" White Oak and Walnut just fine.
What it can cut and how can depend on the blade used, of course but even with the 'wrong' blade I have enough power.
On the other hand, if you go the 3 phase route, you'd open the door to having other 3 phase machines in the future.
I'd love to have 3 phase but I don't...%^)
