Rolex owner considering GO: how good is the chronometry, really?

How good are modern Glashütte Original movements compared with Rolex from a chronometry standpoint?

Rolex publishes its Superlative Chronometer standard of ±2 sec/day after casing, while GO seems to focus more on traditional German watchmaking than marketing chronometry.

For owners who have measured both:

• What daily accuracy are you seeing?
• How consistent are GO calibers across different positions?
• Do they hold their regulation over the years?
• Does GO regulate every watch to a specific internal standard?

I'm considering my first GO after years of owning Rolex, and I'd appreciate real ownership experience rather than spec-sheet comparisons.