Hi there. I currently use two external drives with my MBP and have just got back into using FCP for video editing. I've always used both drives with their respective FW800 ports although one of the drives (a WD MyBook Studio II) has an eSATA port that I've never utilised. I'm wondering whether it's worth my while buying an Expresscard/34 eSATA adaptor to enable me to use the WD drive with eSATA but would like to know if I'm likely to see a decent jump in performance: if the increase is marginal I'd stick with FW800. TIA.