I use a ShopBot in a maker space, and the shared collets are fairly chewed up. I want to invest in some of my own, but I'm having trouble differentiating between them. Is there anything to look for in a "good" collet? For starters, I want an ER25 for 1/4" shanks.

Here are some that I found:



There is also one for sale on the ShopBot website, but it's about twice as expensive as the others. Suggestions welcome!