Our MB friend George raised a good point in a previous topic : the fact that he doesn't really care about the difference, in a MB watch, about an in-house / ETA caliber.
Some purists may be offended. I was. There's no such thing as a manufactured caliber. Wait. Really ?
The fact is that ETA, Valjoux, Sellita & others are industrial movements. Which are, by definition, way more reliable than most in-house calibers, due to the fact that they have been produced by millions and enhanced thousand of times. They barely have no default.
In which way they should be less prestigious than manufacture movement ?
What's your position here ?