I'm not going to say that they're *all* good. I've seen some scary boobies that didn't do a thing for me.
I'd also say that they make up less than 1/10th of 1% of all those great boobies out there.
Great boobies come in all sizes. Less-than-perfect boobies are still a whole lot of fun. (thus fall into the great boobies catagory)
My lovely wife enjoys boobies as much as I do. We've both been called for "throwing elbows under the basket" when jockying for position on good boobies. Luckily, there are two.
Mr. FC4L