[Zorono]

seems to be the one that sticks out than the rest of them because many users who have used MSN before upgraded to Skype. I think Skype is more user-friendly than Discord and TeamSpeak etc.

if we are going to sort voice communities by Use Friendly so i 'd recommend doing some tests first... but lets use your sorted list for now. 

1. Skype
   
2. Discord
   
3. Teamspeak3
   

and if we are going to sort Voice Communities by Features so i 'd recommend doing some tests first too 

1. Discord
   
2. Skype
   
3. Teamspeak3