What's the best (performance wise) SATA II (3Gb/s) for around $300 or less? There probably are more expenisve RAID controllers, but my budget is limited.
SATA-IO is the <A HREF="http://www.serialata.org/" target="_new">SATA International Organization</A>, which developed the SATA-II specification.
However, I'd wait a few months if you can. Right now they are finishing off the SATA-2.5 Specification, which, while it does not have any new features over SATA-II, it does mae all the new features compulsory, rather than optional.