Wood over a CF is what I am looking for. I'm open to other options, and after looking at a few of the ones mentioned here I'm really interested in the Kielwood and Kielwood over CF shafts.
I have a bit of a problem with always wanting to try new things, not because I think they will magically improve my game, I just enjoy it. As a result, I've had MANY shafts over the last 10 years or so. Recently I've gone away from the CF back to wood. I've settled at the moment on a Kielwood shaft that started as a Prather blank and was finished out by the late Reuben Fisher. I also have a Jacoby KW that I sometimes play with depending on which butt I'm using at the time.
A couple things to note, I prefer larger diameter shafts, mostly 13mm. I don't obsess over deflection. All shafts deflect so it's really just a matter of how much and getting used to it. I do obsess a bit over sound and "feel".
For Kielwood, I've had a first gen Hsunami and Diviney Trans-K shaft. Both were very nice and to me played similar as far as deflection. I know the Hsunami was foam filled, and I believe the Trans-K was as well. They just didn't have the feel I was looking for though both are better in the feedback department than a CF. Jacoby uses Balsa in the end to lighten it which to me feels a bit more natural than foam filling.
I have a Lucasi Carbon Infuzed 12.9mm. Has a very nice hit and good feedback. With the 12.9 I would call it standard deflection. I believe the smaller ones are notably lower deflection, though I've never tried them.
I also have an OB Fusion 4 which is their carbon cored shaft maple. It's 12.8mm and is ridiculously low defection. A friend who is a high 600 Fargo and has played with a 314 for years did a deflection test and was pretty shocked. If it would have fit his cue, I'm pretty sure he would have tried to buy it from me. It has a nice solid hit and good feedback and no predator "tink". (I do have a Predator vantage which very much has the tink...lol)
For CF shafts, I've played with Cuetec, BeCue, Jacoby 1st and 4th gen, Pechauer 1st and 2nd gen, McDermott 2nd and 3rd gen, Meucci, Whyte Carbon, and the Tiger Fortis.
The only one I still sometimes play with is the Fortis. I may well have the only Fortis X (13mm) shaft in the country as I don't think I've ever seen one for sale and the one I have I bought from Darren Appleton since none of the U.S. distributors would even order one for me at the time. That may have changed now IDK. In my opinion it has better feedback than most of the others I've tried, but it also has a bit more of the tink sound. Not bad, but more than some of the others.
I'm not really sure how much advantage there is putting the CF inside the wood. I'm guessing they can still warp, and they can obviously get dings in them, so it's really more about weight and I assume slightly higher energy transfer if the CF runs full length.
I really like the OB shaft, but I'm not willing to put in the time to get used to the much lower deflection right now.
There are so many options out there now it's really hard to choose but definitely try to find a Kielwood to test. I don't think I've ever talked to someone who didn't like it. If you want the carbon core, the PureX might be the way to go. Just note there are two versions of that. The Fuze and the Infuzed. I may try a Infuzed as my next experiment.