I have two wenge, two ebony, two pau ferro, and one bocote neck. All of them are more fun for me to play than finished necks. The ebony and Pau Ferro necks are very satin like. The Wenge are porous, but they are wicked fast because of it. At least partially. They are my favorite to play, don't really have words for it, other than I have found my brand. The Bocote neck feels more flannel like to me. I recently sanded it to 1500, that is what I had, and it is smooth as can be. But still it has a softer feel that the others. Still have to try true rosewood, canary, and goncalo alves. There is always another project though, so I am not worried.
With sound concerns, the ebony is bright. The Pau Ferro is more like Maple to me, not as bright as ebony, but nothing to scoff at. The Wenge is a bit mid heavy, another reason I like it. I prefer to have a cutting sound rather than a dark tone. The bocote should be the warmest of the bunch, but really, if you put that guitar on the bridge pick up, a strat, it doesn't seem dark.
For playability, I prefer the standard thin or the '59 roundback. I started with an 86 contemporary strat and played an Epi SG as my two main guitars when I was learning, so I stick to those shapes. I would go and camp out at a store and play the guitars that have necks know for being a certain way, and find what fits. For me it was like a bell went off. I have played V'd necks and they crap my hands. No Clapton guitar for me. The really thin or wide ones, I have little ability on, I feel clumsy. So when I found the one that worked, and it was obvious to me, I stuck with it.
Patrick