Saying "Fuzz pedal" is like saying "hot spices". Even if you buy the fuzz some guy used on some old record you won't t\get the dish they cooked up with it, unless you match the rest of the ingredients and methods. Now and then I run an OD with a fuzz, but in general I never run a fuzz into a distorted amp. You can do that but the jagged fuzz wave will get rounded off in the tube clip[ping and you really won't hear the interesting shade the fuzz makes, a wave form you can't get from a tube. Some recording we think of as fuzz weremade using a fuzz but are not the sound of the fuzz asmuch as the sound of that guitar/ amp/ speakers being overdriven. That's fine but you don't need anything special in fuzz to do that. Remember to not confuse history with fuzz. At one time when Rock was formative and evolving, fuzz was the only boost available, and amps we think of as distorted were actually clean amps, or maybe slightly distorted amps. So the fuzz was used to make the cleaner amp more distorted, as much as to get a fuzz tone. There are ways to get your fuzz to come out of the speakers sounding like the fuzz instead of the slightly fuzzier distorted amp. Generally this involves a bigger cleaner amp that can handle the boost without the amp adding its own distortion. Gilmour prefers Hiwatts for muffs, which are only sorta Fuzz'z. Run Gilmours guitar and muff into your PRRI and you won't hear Gilmours tones. Again, make your recipes and stick with the ones that suit your taste buds!