Since 25.07.2018 I'm running Tor exit relay BBF17F784433635FA28E7E585D05FE3B15A31A6B on FreeBSD VPS. Although AS16276 is quite crowded, fact that IP address space is SWIPed to Conrad Rockenhaus means that I, as relay operator, don't need to deal with a torrent of abuse complaints because of usual exit activity. This allows to run relay with default exit policy.
The VPS has OS FreeBSD 11.2 on KVM hypervisor (hypervisor maybe different for newer VPS though), storage is ZFS on GPT.
The relay is too young to reach it's full potential, I may post updates in the future.