I've had 4 custom knives built for me, and 1 I got through the makers lottery. all were fantastic experiences, and I would highly recommend any of the makers.
Andre Thorburn, mostly dealt with his wife, but was very easy to deal with. Even with my weird requests. Andre's work is something that you need to feel to understand. I am always impressed at how amazingly well he makes his flippers. Smooth as snot on glass.
Todd Rexford, Todd's books have been closed for years and it is nigh on impossible to buy one of his knives anywhere outside of the (super) inflated secondary market. He wanted to take a break from folders and make himself a fixed blade. So he decided to do an additional 12 and had a lotto to sell them. I got lucky. Great guy and quite humble considering he's one of the hottest makers around.
The next 3 are gentleman that I now consider friends. Fantastic makers whose quality in craftsmanship is only exceeded by their quality as people. (not taking anything away from the previous 2 though)
Mark Varga, not sure if he's still making knives, but he's a member here so you can DM him.
Clyde Challenor, out of South Africa, his work is getting quite popular.
Bob Ohlemann, a.k.a. Ranger Made Knives, Just starting to pick up steam, and is beginning to forge his own steel.