I am a bit of a Fuzz head....
The king of all fuzzes to me is the original 73-75 EH Big Muff Ram's Head. Get a good one (they're very variable) and they're heaven. Think Gilmour in a box. Nothing but nothing comes close to that wall of sound. Be warned- loads of messing needed as the controls are very interactive with each other. Do not be fooled- the newer Big Muffs are awful in comparison. It's like comparing instant coffee to freshly ground. You'll get a ram on ebay for $500 or so.
For gigging, I use a Pete Cornish P2- which is Pete's take on a Ram. It's built like a tank and is as sweet as a nut. I am very good buddies with Reeves Gabrels and he drools over my P2! And boy oh boy, that guy can play. My Ram is a tad delicate for the road. However, pls note the P2 is over $700 but worth every penny!
I also love the very first edition Sovtek Muffs- known as Civil Wars. Again, loads of Gilmour heritage- he used one on Pulse- it's not as powerful as a Ram- smoother. Again $500 or so on Ebay, but the in/out jacks are soldered directly to the pcb which can cause a lot of problems.
David G had 2 muffs/fuzzes on his On an Island Tour- the P2 and the Ram's Head - go figure!!
And- the fall back pedal- for bang for bucks a LM308 chipped ProCo Rat is a sweet, sweet pedal. I think they're reissuing them now. I highly recommend them. Must be the BC108 model- you need to look inside.
Last but by no means least- the BYOC Large Beaver is awesome too- but you need to solder it yourself and the Skreddys are fabulous but totally overpriced on the 2nd hand market.
"Who wants an orange whip? Orange whip? Orange whip? Three orange whips...."
JB LP Goldtop No. 290- Aged...rather like me.