My daughter wishes some for Christmas for her hikes around Arizona, Canyonlands, etc. Glad to offer some pointers. Lots of good poles out there, and Leki are among the best. I think the Swiss ones have a little better internal grips, but that's a matter for debate.
Poles are great things.
I once used them just for cross-country skiing or snowshoeing, then for glacier travel, and now for just about anything. They make hiking more efficient, make it easier to ford streams or cross obstacles, and protect joints and ankles from shock and injury.