I never had issues with hetzner apart from the lack of ddos protection.
OVH have been hosting with since 2010, never experienced hardware failure, never needed their support I could always do everything within the panel .
Random question I had sent to the support, like to stop server cancellation took 7 working days to receive a reply .
2 years ago I could just phone them in Canada , this changes since they went public .
Quality wise are better and more stable than hetzner but they are also more expensive ... Choose the one you like and spread through different dcs - companies, or Colo your own equipment