Gonzaga:
5-0 vs. big 12
only 2 losses (fluky buzzer beater in Butler)
rolled through the conference 16-0
Any PAC 12, because they are the "Major' of the west (Oregon, Arizona, UCLA, California)
New Mexico:
RPI #2, only second to Duke and held on to top 5 RPI for over two months
(and I'm the biggest New Mexico homer on the forum)
They all suck, none of those teams will be in the Elite Eight. But to answer your question, probably Gonzaga by default, although the top Mountain West teams would give them a run for the money.