Every year I try to replace my 2009 Nike something adjustable driver. It's 45 inches and I really need 44 for better consistency. Usually I try the OEM bargains, something well under $150. For resale I never want to mod them, and they never work with a poop.
A few weeks ago, I tried a Srixon 355 head that I shafted with a PL Platinum .350 shaft. Even at 44 the swingweight is D4, which is on the heavy side for me. It's a heavy head. The feel off the face is very nice and soft. I love that. But my Nike setup still fits better. I probably should buy a .335 adapter on ebay and try again with some shaft I have a better idea about.
Today I've glued up a Wishon 919 with their white label shaft, at 44 inches. I bought it last year just before the deadline for Colorado orders. I even bought the fancy headcover. 🙂
Wish me luck.