DO you like crunchy fuzz or that loosey stuff? I like Big Muff Pi (can be modified for even more gain and sustain) and Boss Metal Zone... you might like the Fuzz Face but I find it a weak sounding fuzz pedal.
Theres some really cool tube based fuzz and distortion pedals out there some are what they call "starved plate" which feed the tube a much lower voltage than what they are designed to run at. This is more of a cost cutting/space saving measure; it tends to degrade the sound --here's a few of the non starved plate pedals that I have come across:
Ibanez TK999HT Tube King Pedal
The TK999HT differs from its two predecessors in that it features internal high voltage DC circuitry instead of previous starved plate low voltage circuitry. Ibanez says that makes a significant difference.
“Using the ‘starved plate’ circuitry, the tube in the original Tube Kings really acted more as a filter to achieve tube tones.” commented John Lomas of Ibanez Electronics. “But with the TK999HT the 12AX7 gets normal DC high voltage, allowing total linear operation of the tube. It works just like a tube preamp because it effectively is one!! The result is that the TK999HT makes any solid-state amp sound just like a tube amp. The distortion is massive yet tight.”
Guyatone MM-X
The Metal Monster's hybrid tube/solid state distortion circuit yields everything from subtle overdrive to extreme saturation worthy of the blackest black metal band.
Stephenson Amplification Stage Hog 
The Stage Hog is a 1 watt, all-tube guitar amplifier that doubles as a distortion pedal and a low wattage practice/studio amplifier. When used as a practice amp, the speaker out jack can be plugged into any type of guitar cabinet. When used as a distortion pedal, the line out jack can be plugged into any guitar amp input. The Stage Hog’s sound is very reminiscent of a good old hot-rodded vintage tube amp. The voice switch toggles between tweed warmth and plexi crunch.
Mesa Boogie Bottle Rocket V1
Mesa Boogie V1 Bottle Rocket Tube Overdrive with 2 12AX7 tubes. Whether it's subtle, touch-sensitive overdrive, a gob of gooey gain or red-hot clean signal to slam your favorite amp's input stage...V-1 gives your sound a serious dosing of Tone. The simple four control layout lets you crank, shape and meter the exact amount of fat, liquid gain produced by the 4 triodes doing the dirty work, snug in their stage-proof bunker, and safe from a stray-foot sortie.
