I also use 1 pole. With some practice, it can be used for a good rifle rest in addition to the hiking.
I've used Costco's and BD's. BD's cost twice as much but I don't think they have twice the life. They're better, yes, but I don't think they'll save you money in the long run. OTOH, even the best ones aren't so expensive that you can't afford to replace them on occasion.

“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.