Okay my time to chime in.
I own a Kent Davis cue. Here is a link to it.
http://forums.azbilliards.com/showthread.php?t=91473
Now this is the only KD cue I own, but I have hit with many. The core in my radial laminated forearm is Ipe. I wanted this core because Kent had made a cue for a friend of mine with this core and I liked how it played.
As for how thin the handle is I requested mine to be a bit thinner. Kent made it perfect.
Now for playability. I went with Kent to the poolhall when the cue was built, it was still incomplete for it had no finish. I broke and ran my fourth try. After that I was running balls very consistently. So I was quickly used to the cue.
After my cue was finished I was in action a lot. I think the first two weeks I had the cue I won a little over $400. As for the hit. I chose the Ipe core because I felt that this core moved the ball around with a little less effort than the other cores. The hit is firm but I still get good feedback, unlike on some other cues that hit firm, this thing did not feel like a rock when I felt the vibration. So the feedback is quite good and had a nice firm hit. The balance point is forward balanced. The actual balance point is right where the inlay is on the long points.
As for cosmetics. The veneer work is really good. I can barely see a seem line, and the veneers a really consistent as the colors are not fading on either side of the point. The finish is superb. When I went to get my cue it looked completed, but Kent told me he didnt even polish the cue yet. I was surprised because it looked done, it was just that his gun sprays so clean it comes out really clear.
Other than that, that is all I can think of right now. If there are any other types of questions I can answer them as well.
Oh one more thing. Not that I should have to say this, but others don't know him. He is a great guy as well, takes his work very seriously and also is concerned that his customer is happy as well. I would never hesitate to recommend him for anything.