I currently skate on quad 2, 3/4 hollow and love it. When I put on my 10' radius blades during the same skate, my agility is cut in half. I'm nervous and feel as though I might fall. You can noticeably feel the 10' can rock front to back unlike a quad. With the quad, it's like you have all this runner in the rear but you can still turn on a dime. The biggest thing you notice is tremendous glide and you have all this extra energy!!! I may try 1" hollow on quad 2 but I will never go back to STD profile. 6'2 200lbs CCM FT1