Of course this will depend on your requirements, but in most cases the default (prefer-5ghz) is what you want.
You probably do not want to use balance bands as you generaly want to have as many clients as possible on the 5ghz band.
Both 5 ghz band steering modes will hide the 2.4 ghz ssid from clients which sends probes on the 5ghz channel.
The only difference between prefer 5ghz and force 5ghz is that the "prefer" option lets the client connect using whatever band it prefers if the client has sent more than 8 probes in the last 10 seconds.
Force 5 ghz will not take this into account.