Hi
Advantage of the Piguet 1150 is its construction with very high tolerances and great power reserve (near 4 days). The piguet 1150 has a triovis precision adjusting system which far superior to the etachron found on the eta 2892-2. The piguet 1150 is existing since 1987 and it has been widely used by Blancpain and Breguet.The piguet 1150 is a true marvel of quality I suggest you to read the article written by Walt Odets on Timezone. About accuracy the accuracy of the 1150 is simply amazing.
About the 33xx, the problems were depicted by Chuck Maddox a long time ago and on his blog as well. I think those problems are specific to the U.S. because I have never heard problems of 33xx powered chrono in Europe. Many persons think that the 33xx is based on a piguet 1185, that is wrong. The 33xx is based on a specific movement made by Frederic Piguet for Omega, the movement in question the 33xx is based on is the Frederic Piguet 1285 ES (es means special edition) de Luxe. The difference between the two movements? the 1185 has a savonnte form and the 1285 a lepine form.the 1185 has 37 jewels and is 21600bph and the 1285 has 33 jewels and is 28800bph. The 1185 is built since 1987 and it is one of the highest grade column wheel chrono movements. The 1285 was introduced in 2001 as the base of the calibre 33xx and uniquely used by Omega who owns part of Piguet. The problems according to what I read on the other forums seems to be less frequent than before.
I think what makes a watch accurate is its adjustement. My old 1973 markIV chrono runs +5/+9 sec per week and it is fitted with a lemania 1340 based movement. My watchmaker has a 1989 rolex sea dweller with a 3135 that runs +0.5sec per 4 days. The extreme quality of the adjustement makes a watch accurate,coaxial or not.The best accuracy I have seen with a vintage omega movement was +1.5 sec per 2 days with a calibre 551. The adjustement is vital when you want a watch to be accurate if it is done very well then the watch will be very accurate but of course some movements have a better tendancy to be more accurate over the long run than others.
regards
georges
