Absolutely right, with my only hesitation coming from reports about the Sharpmaker diamond rods, which folks seem to find wear out pretty fast. Now, a lot of people will mistake "breaking in" for "wearing out" so I take the reports with a grain of salt, but when it comes down to it I'm only really confident about diamond stones from DMT (or maybe Atoma but $$$). It also makes a difference how much sharpening experience the OP has - it's easier for a beginner to screw up a diamond stone and wreck an edge with poor technique than with a ceramic stone. Ultimately the best answer would be "both" - my go-anywhere sharpening kit is a Double Stuff and a small DMT Coarse/extra coarse plate and I've never run into anything that combo can't handle.