I have both...
R11's are more consistent with distance due to higher spin of Nike irons...
Both great irons, once you get used to the Nikes you will like them but it is big adjustment(at least it was for me)...I went with the lvl 61 Nike because it had the right spin rating for those irons...higher spin balls were always coming up off the mark on distance, usually short, lower spin balls were long...the Nike 61's seem just right.
If the R11 meter was slower I would use them all the time to be more consistent, but with a meter that races on me I hit too many late shots with them...right now I only use them for a few rounds to make the Nike meter look even slower LOL