In reply to wildy252:
I find the twist lock type poles always stop working after a couple of years use. They are crap. Clip lock designs tend to be more robust and longer lasting, though for some reason thin on the ground.
Personally I don't bother with the anti shock type as the suspension makes them less positive when using them for balance. That's just a taste thing though.
For the last couple of years I have been using leki micro sticks, as they are light and easy to fit into luggage. The down side is that they are a bit bendy. Before that I had some black diamond poles which I quite liked. A bit over priced though. Can't find the exact model now unfortunately.
On the carbon fiber vs metal question, you are trading weight for graceful failure. Carbon fiber is light and has good rigidity, but if you over stress it then it fails catastrophically and you have no pole. Metal poles just bend a bit. Doesn't happen often, but I have knackered 2 or 3 poles over the years so it is worth keeping in mind.