I'm trying to find the right Epresscard 34 eSATA for my MacBook Pro for using it for backing up and at times when I need to use Boot Camp with Vista x64. There seems to be a host of different makers but they all don't give enough specifics as which will do the job better. Also the range in prices makes me wonder which is the best quality and which actually works. From what I've read to boot from an expresscard requires a certain chip set like jmicron but I'm not so sure if this correct or not. Since this will be my first Expresscard I'm a bit confused and need to be pointed in the right direction. I do know that I want SATA II drives.

Thanks.