Reddit mentions of Sharpstone 2.5" Solid Top 4 Piece Grinder (orange)

You should be able to find some good 2.5" 4-piece grinders for a good price fairly easily. For what it's worth, mine is a SharpStone and it's worked flawlessly for the past three years or so; the threads aren't goofed up in the least yet and the aluminum alloy they use seems to be a bit tougher than the last cheapshit grinder I had. I'm one of those that taps the lid on the side to move things around, and it's not anywhere nearly as dinged as my old grinder. When the teeth get too gunked up I scrape what resin I can out and give it a quick iso wash and it's as clean as new.

is it really that much better? this looks like it uses the same tooth pattern

https://www.amazon.com/Sharpstone®-Solid-Piece-Grinder-Burgundy/dp/B00E7XC6OE/ref=sr_1_3?keywords=sharpstone+grinder+red&qid=1564375975&s=gateway&sr=8-3

if it's that good, i can buy one, but it's not obvious to me why it would be better