TS is not a matter to me, I have TS3 but I do not expect to hear horrible crowd or screaming voice during fight because the game SFX itself is very important for me as mechanic signals. Whereas I found some players shut the entire in-game sound and replacing it with TS is actually making themselves so vulnerable into failing mechanics. For discussion TS should be ok.
Also I do not expect to play with friends. Friend is friend, raider is raider. When I play together with friends I play with mood. When I am playing alongside of raiders I play with dedication.