McCulloch PM 650 vs PM 700

[leeave96]

I’ve got a McCulloch 700 (recent find) and a 610, but have my radar looking for a PM 650.

I know the 650 has more power than the 610, but what about the PM 700?

Side by side, which would be the better saw in wood, the PM 650 or PM 700?

Just curious - Thanks!