Yeah, I'm getting that impression!They are lovely cranks but not without issues re age related wear.
A ‘sleeper’ quality historical crank which is really light, forged and tough is the Sugino Fuse. Used those on bombproof lightweight builds in the past and available for peanuts.
Thanks for the recommendation, I was mainly hoping to find a crank with a little bit of visual flare though! I really like the design of the middleburns, I really enjoy the cnc'ed shape of them. I find the traditional forged cranks a bit boring tbh.
I'd love some of those chunky L&M cranks, but I've never seen any come up for sale!