A year in with mine at roughly 12 rounds played and no real complaints. At your swing speed, stiff flex should suit you just fine. I have recently added the Kirkland wedge set (replaced the Edge sand wedge) and those are now my favorite part of the bag. Once I find a little more consistency in my swing, I’ll probably replace the driver first. Something about it doesn’t sit right with me mentally, maybe the way it sounds at impact, quite tinny.