This is the fourth entry about digital tech cameras. After answering the question why they are still important, the options and physical restrictions, here is the final answer how the different types compare to each other.
The world of digital tech cameras splits into pancake type cameras, where the front and back plates are very close, and view cameras, where there is a bellows still in between the front and back plates. The pancakes (Alpa, Cambo, Arca) have guaranteed parallelism between lens and back (very good for necessary precision of alignment), but have lenses in helical mounts (proprietary and $$). The bellows-type cameras (such as Linhof Techno and Cambo Actus) allow for easy lens changing (on a lens plate), more movements typically, and generally cheaper system flexibility. If you shoot more at f11 (sweet spot of these lenses), parallelism isn’t a factor.
On a good day, one could imagine the bars filled with those arguing advantages of one over the other. I liked the flexibility of the Techno, very much like 4×5 for digital. Any lens can go on it, any back. Changes are pretty easy; tilt, swing, shift all come built in. One person I know hikes with his and seven different lenses, and its not even heavy. Let me know if you want more info – there are a couple of write-ups for it.
OTOH, the portability, ease, simplicity of the pancakes, of which Alpa is among the finest, is great too. But the STC only has the one axis movements, a hurdle for me. Its a very $$ system, and you really have to know what you want. Tilt adapters area available for most lenses, but for each lens separately. Others, like the popular Cambo WRS, have two axis movements, and many like this body too, not quite as elegant as the Alpa.
BTW Here is another link to a quality websites about digital tech cameras: Anders Torger 2012 or even earlier Marc Dubovoy 2010.