I had a very good experience with Markus! He invested a lot of time for answering my question over more than a dozen messages here in the forum.

I bought this helmet from him:
http://myArmoury.com/talk/viewtopic.php?t=40039

The helmet turned out to be exactly as described.

Markus is a trustful seller and I would definitely buy from him again.

Thanks for the good transaction!