Wenge neck-through here. Very wide dynamic and frequency range. Real unique bark to the mids. Nice snap in the attack. Unstable? Hardly. Most stable neck I've ever had. It is laminated though. Just this year, it went from a southern Appalachian Autumn, to the Big Island of Hawaii for 2 months and then to a very dry and very cold last 3 weeks of an Indiana Winter. Shipped the long way(by boat), not stowed on the airplane. I don't think conditions really get much worse for an instrument. Enough time for it to adjust to the climate and then it had to deal with a complete change in humidity/ambient temp. Neck RAW, body has an oil finish. Jackson thin with very low action. Have not touched my truss rod in over a year as the neck just won't budge unless I tell it to with a change in string gauge or something.
If you've tried a rosewood neck, maybe a PRS... think along the same lines, but more aggressive. I'd probably pair a wenge neck with a swamp ash body, but that's just me. I think a mahogany body might muddy up some of the throaty high-def response you get out of a wenge neck.