Looking for a good 60's british invasion type fuzz. heard lots of good things about the Big Muff.
But which Muff? the ones they sell at my local store is the Big Muff Pi (USA), Double Muff or the Little big muff. Which one?

or are there any other good fuzz to look out for?

i got a Jimmie Vaughan Strat and a Vox Pathfinder 15 if that helps.

thanks guys