I have MMR, bought a year of service for $30 rather than doing the $5.99/month but after learning that Strava has more social features I do plan on trying it when my riding improves. As of right now I'm not up to group riding levels but I'm getting better or at least devolving a better understanding of road riding. I have a regular bike computer ( and one w/cadence in ordered) for the instant display feedback but use my phone for all the data logging.