Been through four overdrive/distortion pedals in the last year or so, finally settled on the Rodenberg 809B Drive (thanks Ryan, if you're reading this you were mad to sell it!) Three selections of distortion from the 808 and 809 switches and super fat distortion from the 909 switch, turn up the drive and beautiful sustained distortion leaps out of the cabs. Tone control lets you dial in any bottom end that's lacking, easy to set up. Gigged it for the first time last night, sounded awesome in the mix.
Prior to this I was using the Source Audio Soundblox Distortion Pro, which has more settings than you could possibly need imo, and most sound a little on the artificial side if that makes any sense. But a great feature the pedal has is the ability to save sounds as presets! Two banks, A and B, with three preset buttons to each. If you're prepared to spend some time setting this pedal up it will do the job, I just didn't like the sounds.
Before the Soundblox I was using a Microtubes B7K by Darkglass. Never really got on with this pedal, nothing wrong with it, well made, bags of tone control with the 4 band EQ and all the distortion you could wish for but, it was always on the edge of being out of control, a metal pedal basically. I always felt I was spending my time trying to reign the damn thing in rather than get a sound out it.
And finally (sorry for the long post/review, it's Sunday, it's pissing down outside, and I have a hangover to work off,) I still use a Farndurk BGX2 for subtle, warm overdrive tones on bluesy type songs. Simple to set up, it has one volume and one tone control and a three way toggle switch to engage different levels of drive. It is also a thing of beauty, hence the pic.
I think the overriding issue I have with distortion/overdrive pedals is there is no one-box solution. If, like me, you're in a covers band, the set up you have for bands like RATM or Muse are not going to work for adding a little warm tube sound to a ZZ Top track. Does this make any sense?
Anyway, for now it's the Rodenberg… but that might change.