I was wondering if anyone had directly compared these units. I'm looking for a mapping-based GPS unit for use with 80% road 20% MTB riding. I like the edge's features, but the mapping functions of the 400t seem superior. I have a forerunner305 that I use daily and I could theoretically use it simultaneously with the Colorado for more "on the fly" fitness data field display and tracking, I suppose.

In any event, I was wondering if anyone had any thoughts on the comparison, more with the 400t, as the edge seems to have had quite a bit of prior postings.