I would just chime in and observe that the mighty Skybone has made some cogent points in the past about getting good stoner/doom sounds with relatively low output pups and relatively cranked power amps! :) Depending on just the tone you're looking for, I think very good stoner/doom tones could be gotten out of Mules, Emeralds, Black Dogs, even Stormy Mondays.
That said, some my touchstones for tone were things like Kyuss, Iommi, yadda yadda, and I took Tim's suggestion to go with Crawlers. For me, the worked out to be a good compromise between vintage vibe and metal power. I confess that it would be fun giving Warpigs the ol' workout of doom, though .... :twisted: