Ranked in these QuestionsQuestion Ranking
Pro Usenet access
Three 'shared slots' providers with retention 40 - 1200 days. Four 'private slots' providers with retention 1100 - 2900 days. Shared providers are not available from outside, only internal with running oVPN / oSSH. Private providers can be reached from outside our network with 'Private Slots'. Usenet is free of charge but think about fair use.
Pro Good support
You can chat or use IRC, there are tickets as well as a board, lastly you can use eMail (which uses PGP).
Pro SSH tunnel
Pro Multiple devices
Connect 1 device per openVPN server. Possible to connect 2nd to same openVPN server with special IPv46 or IPv64 configs. Number of devices is limited by count of servers. Connect SSH/SSL or SOCKS5 as you need. There is no limitation.
Pro SSL SOCKS5 / SSL HTTP proxy
Stunnel wrapped around SOCKS5 or HTTP proxy.
Windows with custom open source client software. MAC OSX with Tunnelblick or Viscosity. Linux with standard (but latest) openVPN 2.3.x. Android with openVPN App by "Arne Schwabe".
Pro SOCKS5 / HTTP proxy
Pure, not encrypted, SOCKS5 or HTTP proxy.