We are using four scanners, that work with Mac.
I am actually using two scanners: an Epson V600 at my home office and I also have an older Mustek 1200S A/3 scanner for digitalizing line drawings. My father has/is using an Epson V19 and my sister's family is using the scanner built into the multifunctional Brother DCP-L2550DN.
These manufacturers had always solid Mac drivers. As far as I know/remember.
Oh, and if you have an older scanner, than there is this excellent piece of software:
VueScan. Totally worth the registration and checking out.