Does anyone know what the best eSATA controller card to get might be? I'm looking at this one:

SIIG SC-SAE212-S2 PCI Express x1 SATA II Controller Card

I'm planning on getting a Western Digital My Book Premium ES 500GB hard drive as my external drive, and it can use eSATA or USB 2.0. I figured I may as well have eSATA capability for best performance at home, then use the USB 2.0 connection when I take the drive elsewhere. Motherboards with built-in eSATA seem to be very rare. Anyway, if anyone else knows of a better controller card, I'd love to know about it. Thanks!