My Linhof Tech V--purchased used but serviced by Marflex--does set up quickly and easily with everything solid and zeroed and the infinity stops placed accurately, but if you buy a used one, it is wise to have it checked by authorized service. If you like wide lenses and don't plan to use the rangefinder, consider a Tech 2000 or 3000.
I have a Sinar P, and as great a camera as it is, there's a lot that can go out of alignment, so you may not be happy with it. The levels are adjustable, for instance.
A great tool I have for turning any kind of floppy wooden field camera into a reasonably precise instrument is a Suunto Clinometer-Compass:
You can use it to set the front and rear standards to plumb, whatever the angle of the base (so you can use it for indirect rise/fall), or to transfer movements from the rear to the front standard like with a Sinar P, or use it to level the base, and use the compass to adjust the swing axis, as long as there are no magnetic parts on your camera.