Originally Posted by usta2050
+1, cortex is a marketing gimmick.
Not too certain about that. As the TW racquet (technology) reviews mention, there are 2 versions of the Cortex technology used in Babolat raquets. One of these might have some effect on frame vibration and perhaps only a marginal effect, if any, on shock. The other version may very well have a greater effect -- it may very well offer some moderate dampening and isolation.
Babolat racquets seem to have a reputation for being arm-hostile (unfriendly). However, from TW tester reviews it appears that some
of the Babolat frames have very good comfort ratings. Even so, I would not suggest most, if any, Babolat racquets to someone seeking an arm-friendly frame.