I bought these a couple of months and are happy with them so far but have only used them locally where the ups and downs are not as harsh.

http://www.sierratradingpost.com/p/,...nti-Shock.html

I needed to replace my Lekis's that had bent really badly when I tried to use them to prevent myself from taking a header into a swamp. I could blame the poles and say Leki poles are crap but we all know that's not true. Anything will break if you abuse it enough.