I think if you want a cane for support while walking, a lightweight collapsible trekking pole is about as good as it gets. Easily adjustable to height, and can be collapsed for packing or storage, if needed.
I like the design with a palm rest rather than a hook or handle as it is more comfortable to put weight on for me. My knees are doing pretty well these days so I don't use one for most daily activities, but do take mine with me for my daily 2~ 3 mile walks.
I recently began experimenting with those dual trekking poles. These are adjusted differently from a cane. Height should be about elbow high. I think they look pretty dorky, but I gotta say on long descents/ascents when hiking they make it a lot easier.
Both of the above are also great for balance when on slippery surfaces or tricky terrain.
I have a nice sword cane, too, but can't say I actually use it. I enjoy having it though.