For 90% of customers we recommend the 6 blade reel because the optimal cutting height is 1/2″ – 1″. We designed the Revolution so that our 6 blade reel would be the perfect cut rate for the masses. We only suggest the 10 blade reel for customers who will be maintaining their turf under 1/2″ and will be mowing their lawn everyday or at most, every other day. More blades doesn’t equal a better cut, it has more to do with how often you will be cutting. Lastly, each reel mower on the market has a differently designed reel RPM to ground speed ratio. Mathematically, our 6 blade reel on The Revolution has the same “clip rate = optimal cutting height” as the Rolux 9 blade, Tru Cut 10 blade, and California Trimmer 10 blade”. We designed the mower this way because our maximum cutting height is 1.5″. The 10 blade Revolution Reel has the same “clip rate = optimal cutting height” as the 12 blade Rolux and if there was the option, a 12 blade Tru Cut and California Trimmer.