The BA passport 120 poles are only the lightest because they are a very short 120cm length.
If this works for you, you are fortunate. It is probably too short for anyone over 5'8", which excludes the average height male and up . And will be lilkely too short for most anyone when going steeply downhill where they need to extend for extra length.
After 400+ miles of decent usage, one of my Fizan compact poles now has some cracks. Not just the outer tube that is subject to expansion forces from the expander (2 cracks at this point) , but the top of lower inner tubing where the aluminum bushing insert is that holds the expander is as well. To me this indicates the problem likely came from a stumble that put a high bending load on the pole lower joint. The outer could possibly be attributed to work hardening and fatigue, but there is no reason for a crack on the inner without a bending force where the bushing goes in to it.
Light weight, and durability, are tradeoffs. Other that this, Ive been completly satisfied with Fizan poles. No slippage problems ever,and we have 2 prs.