Jelopster The Aldila NV Greens
I've said it for years....the classic all time best shaft! IF, it fits your swing. Sadly, it does not fit mine any longer, or I would still be playing them. Actually, I did play one last year in my Epic Flash, but it was @ 46 1/2" in order to make it flex close to what it did @ 45", with a faster swing.
There are a lot of really good shafts out there, like you've found with the Pro Launch, as long as it 'fits'. And, they are cheap enough that the search will not break any bank.