Just my 2 cents; re the talkback button, they tend to not age well and either become intermittent(at best) or start to make nasty noises when pressed(which might really hurt someone with phones on). I gave up on TB buttons long ago and route my TB mic to an AUX track(feeding the headphone mixes) and insert Sound Radix Mute-o-matic. Its a free plugin that can be set to mute when the transport starts(which kills my TB mic) and can also be set to mute when transport stops(handy if you wish all the reverb and delay plugins would mute the moment you hit STOP
