I've read a lot of things about Wisner cameras. I thought about getting a technical field because of the bellows draw, but the lack of a graflok back, the red interior of the bellows, and the weight turned me off, although I guess not all cameras have red bellows inside.
I'd second Canham. I've met the man and seen his "factory" which is really just a building by his house in Az. Super nice guy and the cameras are fantastic.
Another certified Canham fan here. I own three of them - a 5x7, a 5x12, and a 14x17. And I can absolutely attest to the quality of his customer service in addition to the quality of his construction. I know I've told this story before elsewhere, but I'll repeat it here.
I bought a used Canham 5x7, with an early serial number (low three-digit). I was planning to take it with me to Argentina. I was probably the third or fourth owner of the camera, which was probably a decade old at that point. I had several weeks before the trip, and was out field-testing the camera to get myself used to its controls, when a piece of the back flange that connects the film gate section to the rear standard split. With the help of a woodworker friend of mine, I made a field repair to the split just in case, but then I called Jim at Midwest Photo where I had bought the camera. He called Keith, who express shipped me a replacement back with the only request being that when I got back from Argentina, I sent the broken piece back to him. He covered a repair under warranty on a ten year old, four-owner camera.
Another time, I wanted to modify the camera. It had the front standard built for Linhof Technica boards, but I wanted to mount an antique lens whose flange was too big to fit a Technica board, but would fit nicely on the Toyo 110mm square boards. The Toyo boards are the new standard for the Canham 5x7 field camera. I called Keith - we spoke directly on the phone, and he walked me through my options and was able to help me figure out the least expensive and fastest way to modify the camera to fit the lens (he sold me a different front standard to which I transferred the metal hardware for attaching the bellows and the lens boards). And I had the new front panel on my camera within a week of my talking to him on the phone.
I'm absolutely sold on Canham cameras.