Same here on the P-660! They are a beast and the "P" stands for Pizza (as so I'm told). Some of my dough is low hydration that an H600 won't handle too well, the 660 is a workhorse. Most are 3 phase so use caution there, you will need a phase converter or 3 phase power. If you are lucky you can find a 220 and those work great as well. Expect to pay generally between $5700-$6700 for a nice used unit retail.