I agree; I've had very little need for stop boxes since I've had my Sunn 1200s: it generates the tones I like and for the limited times I'd like to add a little something else, it just isn't worth it to pick up stomp boxes.

I do have a few as well as a Heil Talk Box which I'll probably work back into my rig some day, but for now I'm simply enjoying good natural tone and don't see much need to spoil it with effects.