...and he asked me for a quick rundown (on this and others).
LANGE
410.032 Perpetual Chronograph
An evolution of the original
Cons
— Manual wind…not convenient for PC
— Short (36 hours) power reserve
— Moon a bit small
— Thickness would normally be an issue but not with this many complications
— Chrono functions take precedent over PC function
Pros
— Movement dimension and finishing as good as anybody
— The minute hand of the chronograph jumps in one minute increments rather than continuously moving
— Rare…unlikely to see another one
VC
5000T/000R Perpetual Calendar Chronograph
Cons
— Manual wind PC
— Very large diameter
— Thick (12.94mm)
— Small movement, dials/day/date pushed to middle
— 48 hours power reserve…enough?
— Leap year window in odd place
— Resale likely to be poor compared to ALS, PP
Pros
— Lemania-based movement…also used previously by PP but not in-house
— Man-in-moon has character