Lovely watches all.
Do you know if the AP Jules Audemars Chrono that you tried was an integrated chronograph or a modular chronograph? I love APs (have a RO Dualtime and have long coveted the Jules Audemars Extra Thing, ROO Diver and RO Jumbo), but my longstanding quibble with them is that they tend to use modular chronograph movements for their Offshore and Jules Audemars collections. Last I looked the Jules Audemars chrono had a modular movement; in fact that looks like a calibre 3120 movement (with chrono module added). The only integrated chronograph movement they appear to use is in the RO Chrono (F. Piguet movement). Given the prices they charge, I would prefer an in-house integrated column wheel movement. I realise that much of the cost is due to things like the excellent movement finishing and detailing, but given that their competition among the Big Three+Lange and even among the less august manufactures (e.g. JLC, IWC, etc.) have developed their own in-house integrated column wheel movements, makes me wish that AP would do the same.
I believe that the movement in the JA Chronograph is modular using the 3120 as a base. While I understand the preference for an in-house integrated column wheel movement, if AP does develop one, I imagine it will carry a much higher price tag than their current offerings. The offerings from Lange and PP all cost more than the JA chrono or the RO chronographs. VC still uses the same F.Piguet movement in their Overseas chronograph, and AFAIK, they were using Lemania bases in their recent generations of chronographs such as the Traditionnelle. I would also suggest that with Patek, JLC, and IWC are much higher volume producers of watches than AP and VC they can more easily spread out and recover the cost of R&D for chrono movements which are very costly and time consuming to develop. Last production figures I saw were VC was about 20-25,000 watches annually, AP 33,000, Patek 55,000 and IWC was around 70,000. So be careful what you wish for...we could eventually see APs with an integrated in-house column wheel movement...but at a far higher prices.