Reggie as a punt returner
Roby, imo, is the best punt returner on the team because he rarely ever loses yards.
I hate it when Reggie returns because he used to fumble or run backwards. He's mostly gotten over that, but I still think Roby is the better returner. He's super-fast, as is Reggie, but Roby seems to run downhill more consistently and, to me, seems to get better yardage usually.
I haven't looked up any stats, so feel free to correct me if Reggie has a higher return average.
Basically, Reggie has his moments of supreme greatness and bad goofups, whereas Roby is overall consistently better at returns, but only has a truly "great" run every now and then.