How will shaft flex affect my driver shot?
A stiff shaft will keep the ball flight down and with less left/right variance, a regular will go higher but more variance left to right and a little more distance all other factors being equal. It sounds like you could handle a firm shaft, how you load the shaft (fast or slow tempo) is as much a factor as speed when picking a shaft. I’m guessing your fade/slice is caused more by your grip or tempo than the shaft. Guys want to hit a driver hard, so they give it a little extra nearing impact. Often your hands get ahead of the club and you drag the face across the ball instead of squaring and into the ball. Try mastering your tempo before investing in a new driver. Then you can test stiffer shafts and kick points. High flex point for fast tempo and lower flight, the opposite for slower tempo. Check your grip as well and make sure you have a grip that both hands work as one unit.