I've been running an old Supermicro 8-port MV88SX6081-based card on FreeBSD+ZFS since about 2008 - never had a problem. Same controller was used by Sun in their venerable 48-drive X4500 "Thumper" servers, too.

Not sure that's entirely relevant information in this case though :P

I have one at home right now. It is dogshit as well. Countless BSOD because of it.