I like Wisconsin's alternate for this year; throw-backs are more my style. I like primary colors, and my all-time favorites are all "classic" looks, (in no particular order) the traditional versions of:
Michigan, Penn State, Ohio State, Alabama, UCLA, Notre Dame (I like the green and gold, too), Iowa, USC (Trojans), Texas, and LSU.
I like the Badgers' uniforms, but I don't think they are top of the heap. Similar with Michigan State (see below).
I've never particularly liked narrow block letters, so Oklahoma and Nebraska take a minor hit. I don't like wide, or non-symmetrical helmet stripes (Indiana, Michigan State, etc.). Tennessee's orange is just a bad color on an otherwise good uniform. Illinois' and Auburn's blue with orange (and vice versa) doesn't work for me, and I don't think black is good with any color other than yellow/gold (Iowa, Colorado, Army, and Purdue have all had pretty nice black uniforms). I really don't like black as an addition to an already good color scheme.
I like white on white road uniforms (Texas, Wisconsin, Stanford stand out in my memory).
Generally, I don't like helmet stickers, but the buckeyes work for me. I think that's the only one.