i need to get at least 4 channels of discrete audio into my laptop. i have external preamps, so dont really need a unit that has preamps in it. FW or USB2 - seems either would be okay. however, i read that continuous throughput for USB2 is not as stable as for FW, but it also seems that not many makers are including FW in new computers anymore. so maybe investing in FW is not a good idea if my next computer wont have a FW input, or maybe no FW chipset at all. thanks.