I've only used one size so far but it worked fine for cutting a hole in the countertop. It would have been nice if saw assembly instructions were included in the kit.
Pros
sizes 7/8, 1-1/8, 1-3/8, 1-3/4, 2, 2-9/16 saws; 2 pieces gazebos; 2 M2 PC pilot drill bits and an adapter