E,

IMO, the black Diamond Flicklock poles are the toughest around.
Specifically the Contour Elliptic Carbon.

http://www.blackdiamondequipment.com/en-us/shop/mountain/trekking-poles/contour-elliptic-carbon

I have been using and using hard the Gossamer Gear LiteTrek 4 poles and love them. They are the lightest adjustable poles available. I have had no problems with the twist lock and they are unbelivably light. I plan on using them this year for hunting, but will hang onto my Black Diamonds just in case.

The Litetreks might not be durable enough for packing heavy loads on meat in off trail, rugged terrain.

Ed T