I was new to the Nimbus as I just started really running last year.  I had the 13's - a lot of people didn't like them but they've been my favorite pair of shoes to date - I crossfit mostly, but in the last few months have been working on improving my running distance from 5k to 10k.  I finally put my 13's out to pasture after about 7 months in them.

This pair felt great from the moment I slipped them on and have been just as good to me as my 13's.  I love the colors too!