I've got a Lynksys kit with 5 grits, but I often brake out my bench stone to get MY BEST job done on it. I've been sharpening since 5 years old ( on a paddle driven wheel, sharpening axes, sickles, sythes, and an occasional adz. ) If I messed up on the tool or the wheel my backside paid for it.
I have one major question what do they use for cooling on a belt grinding system. I don't grind an ax without a water bath or better yet a drip can. That's just the welder's helper coming out of me.
You have to LIVE, DIE, and PAY TAXES, and pay for what you do between your LIVING and your DYING!