The twist-lock 'failure' issue is BS.
If they are loosening it's simply because you're not tightening them enough, not because they are bad/weak. They have been a reliable proven system for over 20 years, I have several old sets that are family/friend loaners that have never failed, my current personal set of Leki's were bought in the 90's and have thousands of miles on them.
On the other hand, cam locks are in fact more complicated and prone to break, the reason they are being pushed now is because they are far cheaper to manufacture, especially since the big push towards carbon-fiber poles where a machined insert is needed to make twist locks work. I've tried a few in recent years and have had cam lock issues, they were a fad in the 90's and went away due to the same issues they have today.
Stay away from the spring/suspension poles, they are complicated, more expensive, and actually defeat the purpose of a good pole...stability.