I've got my death by audio Interstellar Overdriver like a week ago and in very short time, it grew to my favourite distortion pedal.
As you can see, i have the version with mastervolume, got it from ebay.
So, as i got it, i quickly set up all my gear, adjusted the volume on it (this pedal can be terribly loud!) and began to play. In short time, i got all my favourite BigMuff tones out of it (the ones i never got out of my black Sovtek BigMuff) and a lot of very, very usable overdrive sounds.
Just imagine, this pedal's got no EQ, just a mastervolume and a gain control. But it let's you get sounds from At the drive-in to My Bloody Valentine or Lou Reed or The Weakerthans. I love it. Finally something that's not compromising.
dba founder Oliver Ackerman is vocalist/guitarist of A place to bury strangers. Also, some of them (or was it just Oliver again?) were members of Skywave. This may be the reason why you can get such a great Shoegaze sound out of it.
Here's my advice to you: at least try one! It's great.