I'd go for the Big muff too from those choices, but i'd add the Ashdown LoMenzo hyperdrive to the list.
the ashdown has a wide variety of sounds available, and retails around the £60 mark.
as for Wah, i own dunlop 105Q, and it's good, but i think the ibanez weeping demon might fit your choice of style a little better.
it gets a good bit of love here and TB, it's extremely adjustable, and costs about £110 new.