I'm not sure what input options you like better on the Firepod. The MOTU has phantom switchable per channel and a pad on each channel. The Firepod has phantom in banks, and no hardware switch for the pad at all.
The Motu can be expanded to 16 in and 10 out with an external ADAT converter, while the FirePod is 10 and 10 only.
The advantage to the Firepod is that you could do eight channels out without having to buy an external ADAT converter. Other than that, the 8pre looks very nicely set up in comparison.