In all honesty mate I never witnessed enough to give you an answer...you and other guys on here will have seen far more than me....
I was lucky enough to be invited out by the likes of Miles ...and Chris moyes...and got to meet a number of the names talked about in threads such as these..and they all had good dogs...There are obviously stand out runs you remember of course....
Miles dog that got sold to Saudi...forgot its name....one day out near Boston that had a grueller 4..5 minutes and mate that hare was a machine....it was f***ing flying it was so fast it created its own weather