I have had two kydex sheaths from Okuden and the are top notch!!
He currently has my CG BATac that he is doing a sheath for and he is sending a Crash Axe and Fat Warden sheath with it.
His prices are fair and he has great communication.
I would recommend him.
All the other makers are great to but I don't have personal experiences with them.
I do have a CupidVore and Vore LE sheath coming from AL Welke and I picked up a Rainwalker Mutt sheath from the XC so the experience is coming.
You can't go wrong with any of the makers listed.