I've got both versions of this watch. The 7750 I got about 5 months ago in stainless steel. It has performed flawlessly. It is a few millimetres thicker than the gen, but that hasn't worried me. The watch in general has that precision look about it that says "expensive". BTW, the seconds are at 9, in the vertical slot.
All the functions operate just like the gen.
I have received 2 quartz versions only a couple of weeks ago. One is the stainless steel the other is the black PVD with rubber strap. These quartz versions use the Miyota OS20 movement. So far they hold good time, but they don't have quite the caché of the 7750. The AR is not as good if it exists at all, the functions don't operate like the gen, e.g. forget sub second timing, as the seconds pulse a second at a time, making the caliper slider useless, also the vertical slot counts minutes not seconds and the wheel at 6 counts seconds not hours. The clasp on the rubber band is bulky and looks cheap, but the SS band is quite good and similar to the 7750 one.
The quartz models are thinner, but that doesn't make up for the other shortcomings. The 7750 also has the glass back which is nice, the others a solid back. Overall you get what you pay for, the 7750 is about $350, the quartz (in my case) $150. If you wanted the look (while on the wrist) without going the bigger $$$, I'd go for the quartz stainless steel. It doesn't have the absolute look of the 7750, but it is less than half the money.
Just make sure you get photos first, as the quartz models start at around $60 with some dealers and at that level they are much worse than the $150 versions.
