I'm running my BNR's for the last 6 months and i'd say i'm very happy with their performance.I didn't go single because i like the power from low rpm that sequentials offer.I'd say go with the BNR...here is a video at 0.9 and 1.1 bar at 3rd and 4th gear....
http://www.youtube.com/watch?v=WcYjQqy_Wz0