Sata 1.5 or 3.0

After the threads about my fantasy supercomputer build, I decided to build a MINI super computer. I have run into one problem that will hold me back from completing the build.

What is the fastest sata drive on the market?
Would it be the [url=http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=20*0*500*4+*0*550782*&name=*0%2c000+RPM]Sata *.5gb/sec Raptor *0,000 RPM[/url] or a [url=http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=20*0*500*4+*0*5**5***&name=SATA+*.0Gb%2fs]Sata *gb/sec drive[/url]?

I'm confused because of the technology release timeline. I would think the *.5s would be slower, but the *0k RPM seems to double the performance of the *.0. Am I reading the specs right?

Well, I just did a bit of Googling, and so far the Raptor is named the faster of the two SATA drives. I also found a good site that can compare two SATA drives based on many criteria.

[url]http://www2*.tomshardware.com/storage.html[/url]