Didn't expect to spend money on anything but I bought this on impulse as it was dirt cheap so I couldn't refuse.
Already have a Tube Screamer and Vox Ice 9 for my drive boosts but this is another addition to the tonal options. I'll probably use this in tandem with the Ice 9, all depending on whatever amp I happen to plug into for the next wave of gigs.
I had an SD-1 for a long time. I actually really liked it.