150 dropper can be fine until you ride a bike with a longer one and then it's not.Speaking of which, I rode my mate's Specialized Stumpjumper (L) and it had a 150mm dropper, it let me lean into the corners and I thought it felt fine.
With that in mind and hearing that longer droppers are less durable than shorter, I'm thinking of buying a 150mm dropper instead. As someone that's never had one before, do you think I'm making a terrible mistake?
At your height I wouldn't consider anything less than 180.