Most on here would say I'm blowing smoke out of my ears...
But, I find SW the most important factor in my liking a racket or not liking one. Stiffness seems less important, as I use rackets with stiffness ratings from 68 down to 57, and the ball I hit doesn't seem different.
Strings and tension make a difference.
But handle weight less so, even though equal SW's, the heavier overall weight seems to handle incoming hard spins and deep placements better...or more easily.
Currently, I"m on a light racket and SW kick, but I only play at 4.0 levels, and usually doubles, where big groundies is less important than quickness and reflex volleys.