M3l here. I’m 6’3, S bars look better but they’re just too short if you’re much above 6 foot or so
3 speed is fairly important for me, 2 wouldn’t be enough. In fact I had my 3 speed gearing dropped by 8% or 12%, can’t remember which one. I use it for pootling, need to be able to ride it up a London hill, need to cycle it in full clothes without getting massively sweaty, and need to be able to take a child on it (also up a hill)
Guards are massively important. Rack is less useful as you can’t leave anything on it and fold it.
I have marathons, 1 puncture from a drawing pin so far, have been pretty reliable.
Definitely get the luggage block, luggage is genius on the brompton
I bought mine this time last year, new version has better shifters and there’s no extra charge for buying it in a nice colour