Shadowtracker,
Here's my contribution: My primary considerations are size and weight. For that reason, I have avoided the metal-bodied cameras, opting for more fragile, but lighter weight wood. Some wooden 4x5 field camera bodies (the wooden "box") are much larger than others. I like the smallest possible.
The first field camera I bought was a Wista DX. I still use it as my primary packing camera for a couple of reasons:
1) Unlike a lot of other field cameras, the Wista will fold up with a lens mounted on it. Mine will just close with the Fujinon A 240 mounted. I routinely close it with my 135mm and my 203 Ektar. This, for me is an advantage since it saves on space. My other wooden field cameras won't allow the camera to be closed with the lens mounted, which means I have to carry the lens separately.
2) The Wista is among the lighter cameras, and is dimensionally small (many cameras have bigger "boxes"). This coupled with the above lets me get most of my field kit (4 lenses, camera, filters, darkcloth) into a fanny pack. Meter and holders go in a fly-fishing vest and another over-the-shoulder pouch. Tripod is either lashed to the fanny pack or, more often, carried. For day trips, this allows me lots of flexibility; hands can be free to scramble, the weight distribution is good, etc. In use, I hang the film pouch from the tripod and sling the fanny pack down over my shoulder. This allows me to work out of it like a camera bag; nothing has to ever touch the ground except the tripod feet. This comes in handy in water, snow, tricky, steep, slippery locations, etc. (Look at
http://www.doremusscudder.com/?m=9&s=40 for a picture of my kit in action.) For backpacking, I can strap the fanny pack to a larger pack and stow the other stuff inside. Then I have my kit for day trips with me as well if I have a base camp.
There are some disadvantages to the Wista and similar-size cameras. I can only use my 300mm because I've mounted it on an extended lensboard. The 300mm of bellows draw is not really enough to use a 300mm lens. Longer lenses are impossible unless tele-designs. On the other end, my 90mm and 75mm lenses are in recessed boards and I have to wrestle a bit with the bellows when using movements to the maximum for these (they do work, though).
Most standard wood field cameras will be similar with the exception of the top-end models (Ebony comes to mind) that have greater extension and wide-angle bellows, etc. These are almost always a bit heavier and often larger (i.e., a bigger "box"). I work with a Woodman Field in Europe a lot, which is lighter, won't fold up with the lens mounted and won't accept recessed boards. Nevertheless, I find it to be very serviceable. Its design allows for close enough focusing for the 90mm with some movements. I imagine the Tachi and the Shen Hao cameras are similar (I haven't handled those for a while).
That said, if I were looking for a new field camera, I would definitely look at the new Chamonix 45n-2. I haven't had one in my hands, but it looks really "trick," with extra bellows draw, nifty multi-purpose bellows and lots of extras that basic field cameras don't have.
The above is my experience, now my advice, for what it's worth: Light weight bare-bones field cameras have more limited movements. Most of them will do anything that more sophisticated ones can, but may take a bit more fiddling or, at least, figuring out how to do things (I wrote an article for View Camera Magazine on field camera movements some years ago if you can find it
) I feel lateral shift is a must, on either the front or rear standard, so double-check to make sure the camera you buy has this feature (the Wista DXII, for example, does not). The advantage to the simpler cameras is light weight. Most more sophisticated cameras weigh more. Compare specs and features and make decisions based on your desires and needs. Getting your hands on a camera and trying out the controls is the ideal, but not always possible.
Finally, don't stress out too much about your decision. Just about any camera on the market will do a creditable job for you if you learn how to use it well. And, if you get one you really hate, you can always sell it and try another; and you will have learned what you do and don't like.
Sorry this is so long, but I hope it helps.
Best,
Doremus Scudder
www.DoremusScudder.com