yeah the cortex has a dampening effect for sure b/c i have 3 old apd's and 2 new apdc's and that seems to be the main difference. the cortex is almost like a built in dampener.
sounds weird but i use 3 dampeners on my apdc strictly for shock absorption for tennis elbow reasons. yeah, the feel is a bit dampened but you get used to it. without dampeners, my elbow would hurt a bit more. i actually was using 5 sampras "O" dampeners for a few months, then switched to 3- one Sampras "O" and 2 smiley faces. i also noticed an increase in power going from 5 dampeners to 3, just FYI. So dampeners are great but in using them, you sacrifice both feel and power. i gotta have 'em though.