Credor may sometimes seen as “lower” level brand than GS. But those two were created by completely different concept:
Grand Seiko - The world’s best practical watch.
Credor - The world’s best dress watch.
So, naturally, less mechanical watch (more Spring Drive) than Grand Seiko line, Spring Drive movement and the watches with it in are made in Shiojiri - Seiko EPSON. They seem to have strong “sibling rivalry”..... but fair to say that they fight on the different field.
It’s really up to you and up to the occasion. They are both superb and needless to say, bang for the bucks.
Thanks, Cazalea!
Ken