Until there is sufficient mass and variety of USB3 products, eSATA and FW800 will be the better products. eSATA in particular will likely dominate External HDD in the long run, because it is simpler and (much) cheaper. Sure there a lot of excitement over USB3, but history tells us that does not mean it will be a hit. And as it is, Intel may drop USB3 and go with its even faster and cheaper "Light Peak", if you believe rumors from Intel. It is much to early to see what will happen. Mid 2010 may be good time to really know.