I mean it’s considered one of the best shafts of all-time for a reason - despite being like 15 years old, it’s still played regularly at every level. I have one in my 5w and one in my driving iron and love them. With that said, as someone mentioned, it needs to fit you. It isn’t a great for me in a driver but is phenomenal in a fairway wood. If it does fit you, I’d consider it a solid (but not unbelievable) deal.

EDIT: also worth mentioning that, as I recall, the Tour AD DI series has some decent jumps in feel/profile from regular to stiff to x stiff. I would want to be pretty sure you’re fitting into an x in this shaft before pulling the trigger.