The only big difference between a Tech V and a Master is the flap that lets you get a little more front rise with very wide lenses (55-75mm). Bear in mind that only relatively new and expensive wide lenses have enough coverage to take advantage of that flap. The 2000 has no rangefinder and has a built-in wideangle focusing device.
If you already have a Gandolfi and a monorail, the big thing a Linhof could give you is the rangefinder, so I would think that a MT would be more attractive than the 2000. The rangefinder makes it easier to shoot handheld and is very handy for portraits, because you can check focus with a holder in the back.