I don't know that there is A BEST solution to this, it's up to personal preference.
What I love to do is have my usb headphone and 5.1 surround sound system plugged in at the same time.
To switch from one to the other, say sound-system to headphones, I hit the power button on my sound system to trun it off and scroll the volume knob on my usb headset to turn it on (system volume is on 70% so 100% on the headset is a fine tuned fit).
Guide.
Note : once "Add virtual output device for simultaneous output on all sound cards" is enabled, reboot then continue the rest of the steps.