I recently switched from the L100 Nikes to the L97 Callaways. I always struggle with hitting the ding, so the much slower meter helps a lot in that regard. I feel way more comfortable playing the callaways altough there's no question that the higher level irons are more precise and have a better ball flight in the are of 3i to 5i. still, personally i prefer the slower meter and the comfort I gain from that during a round, my scores have improved since the 'downgrade'