Multiplayer Real-Time game service

The game im creating has a circular stage. 8 players are connected to a room(after searching for matchmaking), 4 in a team,each controlling their individual ingame characters, avoiding traps and trying to get the other team to fall into the traps etc.

 

Anyone can kindly advice me on which is the best approach for multiplayer solution.

 

coronium?

http://coronium.gs/

 

photon? 

https://www.exitgames.com/en/Realtime/Pricing

 

appwarp?

http://appwarp.shephertz.com/pricing/

 

Which one is cheaper and reliable? etc.