But what about bandwidth? That's still shared among all the users, right?
And given that they are even advertising 'Seedboxes' and VPN servers [0] hosted in the same network, it makes me doubt the quality of network even more.
They have another product mini dedicated for 6 euro/mo[0]. Which I've been using recently and the network performance has been pretty consistent. They are however seem marketed more for personal usage though.
[0]: http://www.online.net/en/dedicated-server/dedibox-scg2