This thread may get moved to the Resources Board but, in the meantime, let me suggest the MeFoto Globetrotter series. The aluminum ones are less expensive than the carbon fiber ones and the lighter weight aluminum ones are, for me, perfectly suited to long walks with cameras up to but probably not including 4x5 size. There are different sizes (and weights). I have the A2350 and the next size lighter. Both serve well, even for long lenses on 35mm SLRs and my Century Graphic 23. The tripods all come with a good ball head that uses Arca Swiss style plates. (I suggest buying cheap copies of these. The Arca Swiss branded ones are ridiculously expensive.) They all come with an excellent carry case with a strong strap as well.