I have the newest 17" MBP (which kept the ExpressCard slot - yeessss!) I have the best eSATA card available for it, Sonnet Tempo Pro, which I'm using with my RAID 0 from OWC. I render and export huge files on it. Right now I'm transcoding a 200Gb uncompressed video file to ProRes. I was wondering if adding another external hard drive would speed this up? The Sonnet eSata card has two eSata connections but adding another eSATA hard drive would effectively reduce the throughput there in half. If I get a FW800 would I then have the benefit of full eSATA speed (that my card is capable of, ~180MBps by the way) AND full speed the FW800 channel has? Or do they share channels somewhere down the line? (ie. are these separate connection possibilities independent data channels?) I left out USB2.0 because it's obviously slower, but what about that too?