I got one of these ceramic rods from a friend as a gift and I absolutely LOVE it.
This is what I use for 90% of my sharpening. If your knife still has a decent edge on it a few passes on this rod will hone it down to a razor edge, and give your cutting edge a mirror polish.
Also since the unit is BIG it can be used on some pretty big blades. I’ll use them to sharpen up my big carving knives before I carve into a big bird or roast, or say chop up a pineapple, but a big rod can still be used to sharpen up a small blade too, so its very versatile.
And check out that knifecenter price! Seriously I’ll be buying one or two as a spare or a gift on my next order!
I love rods like that for just those reasons; handy as hell for keeping an edge up.