In reply to Toreador: Hmm, they are only slightly heavier than the Mountain King Trail Blaze (and the very similar RaidLight) poles. I think about 20g heavier for the length of poles I had?
The Mountain King/RaidLight poles are much cheaper as you say, and they fold up shorter than the Black Diamonds, which is great for putting them inside small running packs. I can get the Black Diamonds inside my small Inov-8 Elite 15l pack, but it can be a bit of a squeeze. Should be no problem inside a climbing pack though.
However the Black Diamonds
feel stronger, and crucially for me, they work much better on boggy/muddy terrain. I found the Mountain King poles fine on hard-packed/dry trails, but mud/bog would suck the ends and the pole would collapse - very frustrating!
Cheers