I need to buy some connected external storage in the form of a toaster or dual dock for Lightroom, field backups, etc. If you don't roll that way, that's ok, but that is the way I am going for now. This will be connected to a Macbook Pro.
The question is do I go eSATA or USB3? eSATA is proven and less expensive, but also considerably slower (at least in theory). USB3 is more future proof and should be faster, but USB 1 and 2 never matched their theoretical maximum speeds. On my old MBP, the expresscard is the limiting speed factor, but that would not be the case on a newer machine. I fully expect eSATA to die as USB3 matures. So do I go with what is proven now or try to futureproof a little?