I have one of the 770 models and absolutely LOVE the watch. I bought it at Saks for $425 with the orange strap, then bought a new black strap ($8 + a lot of work to get one), then managed to lose the orange one, can you believe that? Anyway, the watch is solid, beautiful and worth every cent of the retail price. It draws a LOT of attention and features a COOL compass function. And that is the sole reason why it is quartz and not auto: the compass. The fly-back chrono is charming and it also comes with a second time zone function.
One of the cons of the 770 (not an issue in the 730 though) is the poor readability of minutes and seconds. As this model lacks the minor minute markers, it is always a pain in the ass deciding if it is 32 or 33 or 34 minutes, for instance. Also, the crown is not screw-down and no AR on the sapphire crystal.
As someone has cited the porsche, enjoy the pics...