I've got a 10-10,which is very similar, in fact, the displacment of the 1-10, 2-10, 3-10, 4-10, 5-10, and 10-10 are the same. the 6-10, and 7-10, are 70CC models, but still 10 series saws. I like mine, its powerful alright.
the 10 series is one of my favorite Macs ever built.