Cascade mountain tech (what costco carries) and if you break a section their replacement parts are cheap. Mine have held up great over 4 seasons only broke twice when wedged between rocks and i pushed sideways hard.
I had a pair of cheapos I got on amazon, used them one time and decided I didn't need any. went on a hike with my hunting partner used a pair of his and decided they are for me. just ordered a pair of the BD ergo aluminum. happy with them.. only con is they don't collapse very small..
Mountainsmith makes some great trekking pole options at a reasonable price plus they have a great warranty. I like the ones that break down as someone mentioned above so I can pack them away when not in use.
FlickLock style adjustment (Mountainsmith calls it "outer lock") and a cork handle are the two things that make a trekking pole for me. After that, they need to adjust for pitching my tarp. How they break down never even enters into it.