depending on what I'm doing I like to have a little of both. About 15 feet of webbing (enough for an anchor, a short haul, or to tie a seat) and about 40 feet of six mil static line for hauling, handline, or emergency rapel. Add a biner or two and you've got just about everything you could ever need or want. The whole bundle weighs in at just over a pound so it's not a huge addition to a small daypack. I rarely bring it on hikes, but for "non-technical" canyoneering it can be a real nice thing to have.
Cogito ergo ambulo cum sacculo