hi euclidorus,
I have no doubt Seiko quartz are excellent perfomers but I'm very old skool where quartz watches are concerned.
The only quartz I kept last time was a Breitling which was used only as a reference time and never worn. It was sold as I also had a Suunto for those active outdoor which is also a very accurate timekeeper. Not all quartz are equal but the Suunto seems to be doing well altho I doubt its thermo compensated.
Will bide my time for the Golgo to come with the 8L35 or even 6R movt.
AFAIK you're right, the 8L35 is a GS movement but not as finely finished and also not adjusted to GS timekeeping stds
One of these days do bring your Golgo for me to try.Who knows I may like it so much I'll overlook the quartz inside..
For now, only SBDX011 comes with the automatic calibre but in black only. Understand that this calibre is essentially a GS automatic (not sure which one) just not as well finished. The Emperor Tuna is nearly 3x the price of the Golgo but has a Ti case and ceramic shroud, and sapphire glass.
Jos, the 7c46 quartz is quite a hardy movement.
What I meant was the same model in design/colors as this Golgo but with the 8L35 instead of quartz
Joseph,
Seiko does have a modern automatic tuna. It's fitted with the Cal. 8L35 found in the sbdx001 Marinemaster. Just google Emperor Tuna. 
