I normally like to run my amp just on the edge of breakup, then push it over the top with an overdrive pedal and compressor. I'm currently using a Lovepedal Eternity Fuse for overdrive, and a Keeley compressor. The Eternity is a great OD pedal - very transparent and amp-like distortion.
I still want to revisit that 60's fuzz thing, so I've ordered a Skinpimp MK3 Fuzz. Its a clone of a Sola Sound mkIII Tonebender, and all the clips I've heard sound fantastic - like Led Zeppelin 2. Should be here in a couple of weeks along with my Farndurk Burgs (orange squeezer clone) compressor.
As far as the discussion of what fuzz is good for - solo vs rhythm - I find that a good fuzz pedal will clean up when you roll the volume back on the guitar. Still useful for rhythm (see: "Whole Lotta Love")
Stay fuzzy!
