They are hands down the best by no small margin. We literally ran them side by side on stainless pipe with a plethora of cheaper wheels and they cut faster and lasted longer by a bunch. We went so far as to figure out our cost per inch to cut. And even tho they (Walter) were more expensive up front when you actually look at price per inch to cut it was not even close. And when you are staring at months worth of stainless pipe cutting it makes a huge difference. I know this is a bunch of super welder geek but when you are running pipe for a living you explore these things. We did not calculate the time lost from changing wheels more often. Walter for the win.