Scopes are a double edge sword and the more magnification the more time it takes to use, and harder to hold steady on a thin bevel.
I have several different types and brands of glasses, scopes, loups and a USB scope and use them all for different purposes.
For honing, it is a pain to stop and put a razor under the USB scope. Which by the way, is 2 magnifications and focus at the extreme ranges. Mine is 60-400 power, it is not variable, which is what most folks think.
There are better, more expensive scopes out there, but for the money the Veho is hard to beat, mine came with software for Mac, though I have never used it on a Mac. Prices are all over the map, so shop around.
USB is great for teaching, (so we are all looking at the same thing), or for taking photos to document issues, But for every day honing it is too slow and not needed.
For honing I use the Carson MicroMax 200, 60-100 power ($5-15) and or the 60X lighted Loupe, (as little as $2). Both are quick to use the MicroMax can be fussy to focus, but the 100X is nice for the magnification once you get used to it.
The 60X is much quicker to use and focusing is not an issue. The bright light feature is very nice for razors. As I get older, the extra magnification is nice. For me, 60x is a good power, though I do have several 10 and 20 X that I use frequently as well, but the MicroMax and the 60x lighted loupe are always on the honing bench, for a quick look.
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