Hello All, I have a new 2009 white macbook with just one firewire400 port. I want to use Logic Studio 8 with the Apogee Duet firewire interface. I want to install the 40/50some GB of extra Logic Studio jampacks, etc., on an external hard drive,, however, I'm reading on forums that I should only buy Firewire hard drives for this(at 7200rpm). Problem is that the Duet only has one firewire port also, so no daisychaining can be done. I'm wondering if a USB hard drive will be sufficient, or if I should just buy another interface with two firewire ports--SEGWAY-- (I'd buy either the MOTU ultralite mk3 or the M-Audio Profire 610 or the Focusrite Saffire)) --any thoughts on which would be best for recording vocals(preamps)+best A/D conversion .. ? Thank you, Geniuses, for your time with this.