This talk of quill versus threadless is pointless
. Some of you are stuck in the past, that is fine, but you don't have to keep banging on about the good old days. Whilst I like a good quill stem, threadless is lighter, mechanically better, stronger and easier to maintain.
I'd question some of that.
Sure, A-set is stronger, but it's not like quill had a major problem with bikes exploding.
I would question whether it's any easier to maintain - no better or worse either way in maintenance terms.
Mechanically 'better'...it allows a set of forks to pivot left and right around an axis. Both do an identical job.
I can see that A-set is liable to be a bit lighter, but perhaps one in 2000 riders is a top flight athlete carrying no excess body fat who would benefit from a gram or two less.
I can see that A-Head is liable to be neater, but then a high quality quill set up can be a thing of engineering beauty in its own right.
Being the awkward bugger I am I tend to fence-sit a lot, be it brexit, helmets, or Coronation Street vs EastEnders. I'm inclined to fence sit on this one too - my bikes are split 4/4 quill/A-set, and I can't see that either gives a genuine, substantive, worthwhile advantage in maintenance, longevity or function. Different answers to the same problem is all. Lets just be honest and admit we simply prefer one to another, rather than make up questionable reasons to justify our choice.