I've had several clam-shell (field) cameras, and I much prefer rail cameras. That includes Deardorff 4x5, 5x7, 8x10, Wista wood 4x5, Wista SP, etc. I like using super-wides, and most field cameras will make this an awkward endeavor. Rail cameras are much stronger. Depending on which, some rail cameras can be much stronger and more convenient to use. My rail camera backpacks very conveniently, and it's relatively light-weight.
That said, the rail camera that can realize the above advantages and conveniences, can end up being a bit expensive. I've been collecting Arca Swiss equipment for years, finding good deals here and there, and I've been able to put together a really nice outfit that I use for 4x5.
One rail camera that isn't so expensive is a Sinar F that's mounted on a 6 inch base rail. Easy to backpack, relatively light weight, and comes with a huge selection attachments. The Sinar savvy photographer will observe that Sinar never produced a 6 inch, base rails. However, it's relatively easy to convert a 6 inch extension to a base rail. (I've described how this can be done on Tuan's LF photography forum.) I enjoyed using this camera a couple of summers ago.