I'm putting together my first system with simplicity in mind. The M-Audio PCI based Omni/Delta 66 really appealed to me because of the minimal additional equipment required to make basic recordings. That said, the M-Audio Firewire 410 also looks interesting. Aside from the flexibility of using the Firewire 410 with different computers, these products appear similar in many respects. Can I get opinions on the pros and cons of PCI verse Firewire interfaces and the differences between the PCI based Omni/Delta 66 and the Firewire 410?