My first rep was a Breitling Skyland that I bought in 2008 and it has a A7750 in it. It ran perfectly for 5 years! I recently serviced it myself and I'm sure it'll run perfectly for the next 5 years.
Yes there can be issues with the movement, depending on how's it's assembled. But most problems are due to dirty, dry movements. Properly serviced, it's a solid, reliable movement.
If I had my eye on a watch that had a A7750; I'd still get it.