Audio interfaces

I'm upgrading my whole setup, new computer, new interface, etc. I was lookin at the Foscurite Saffire interfaces.. on their website it says the preamps are the best in it's class. What class would that be? Or is it just a marketing gimmick? Either way, what would be the next "class" up from that and how much more would it run me? What should I be looking for in the specs to figure out which will outperform the other? I don't want/need something from Foscurite, it's just that the unit seems good for the price.



Thanks,

Adam