Gettin' a fuzz

As the title reads. Anyways I currently own a pre gain/overdrive and was wondering about stacking preferences. I know there are no rules for stacking and I intend to experiment running the fuzz before and after the pre/od.

Nonetheless, I just want thoughts from those who already have experience. What is your preference? What differences are you noticing?

In case you're wondering the pedals are a Walrus Voyager and a still undetermined fuzz (most likely TC Rusty).

Thanks