Multiplayer Networking recomended

Hi all.

I have searched documentation about develop a multiplayer game in Unity, but I realized that there are some technologies to make it possible:

I have readed about:

• Photon using Photon's servers
• Photon using your own server.
• Unity networking
• Unity Cache Server
• Your own SQL server

My game will have:

• Player DataBase (I know only SQL and MYSQL, and PHP of course)
• A scene with ALL the players are supossed to be conected (like a mmorpg open...

Multiplayer Networking recomended