You are all missing very important points. Shaft flex and club head speed, while important, are not the major determining factors in an amateur's driving distance with any club. While a theoretical maximum drive distance can be calculated using club head speed (converted to ball speed); the ball speed assumption is based on hitting the ball at the center of mass (the "sweet-spot") on the clubface and compressing the ball "to the screws". This is a reference to old actual wood drivers that had screws holding on the face plate of a persimmon wood club.
Every deviation from the sweet spot whether top to bottom but especially side-to-side on the clubface will result in a significant reduction in distance. When the ball is struck at the center of the sweet spot on the clubface, the clubhead speed compresses the ball and the ball's reaction to that impact generates the ball speed. No matter how well your shaft flex is matched to your clubhead speed, even if you hit the sweet spot every time, it is all useless if the golf ball you select is too hard to be compressed by your club head speed, so that it will adequately react to the impact. When you hit the ball and it feels like you're hitting a rock, you are either using a ball that is too hard, or swinging a club with a shaft that is too stiff.
Many of us "macho dudes" want to play the same golf ball as our favorite pro golfer. DON'T DO IT ! It will cost you distance - big time.
I'm a 9 handicap, senior golfer with a driver swing speed of 95-100 mph. I am currently playing a RocketBallz driver (with a 46 inch - 50 gram shaft) because I can get it around faster than a heavier shafted driver (I have plenty of them at home). I am fit and strong (for my age) and can still get my driver around with good accuracy, a square clubface at impact, and hit the sweet spot 90% of the time. My typical drive is 240 yards, and it's rarely more than 265 yards. I use a softer ball for greater distance - because I can compress it fully and get max distance. I recommend that you worry less about shaft flex and kick-points and pay more attention to accurate ball striking and using the correct ball for your clubhead speed. Bridgestone has a number of different balls for various club head speeds. Check with your golf store or PGA instructor for a recommendation. I love Titleist golf balls, but my days of playing Pro V1s is past.
More important than anything else - HAVE FUN OUT THERE!