Garhauer has an excellent reputation for being extremely dependable among the sailors I know. I almost equipped with them myself but got a screaming deal on some Lewmars. But yes, I've sailed quite a lot of boats equipped with Garhauer gear and would definitely recommend it for value, performance, and longevity. It doesn't help that they are reasonably affordable in comparison to many of the other vendors, either.
I've heard if you call the company and chat about what you need they often will work with you for quantity deals as they have in the past been very supportive of active offshore sailors, but have no firsthand knowledge of this.