Supermicro AOC-SASLP-MV8 if you want eight ports on PCIe, though you'll need to get ~$15 SFF-8086 SAS-to-SATA breakout cables to connect to your PC. Still, for ~$100 with clean cable management and simplicty, that can't be beat.
Of course, there's the AOC-SAT2-MV8, which is a PCI-X card (that...