Yes I trust my eyes. But sometimes i want to know some more indepth details.
Especially because its not for myself.
For example I read on Beocentral that from 2004 a DVD player from Pioneer was used ( instead of the earlier philips ) So there were some adjustments.
It seems they could be recognised by slightly different more elaborate on-screen menus.
Now im also wondering what those differences were, so if anyone knows ?