I've been using one of these things for years now.
It gives me a nice square cut every time, although it takes a bit longer to ream out the inside.
BUT...I got a pipe tubing cutter from the bix box store when it was on sale, not the one from Greenlee.
Greenlee makes very good stuff; but I don't see a point in paying for their nameplate on something that everyone who sells plumbing supplies has on the shelf.
