At what SPL???? I haven't seen a good review of the R11, best is the NRC one but it's really lacking compared to Klippel. In any event, no Kef I've seen reviewed has any low frequency directivity control at all, they all become omni at like 400-500hz or above. So Geithain has that advantage, which can be very useful.
In any event, I'm not saying Kef is bad, they're also very good. It's all trade offs and small differences at these levels. I don't care about arguing who is better, was just pointing out another valid option.