I built my first guitar pedal: the 'Umble' from RunOffGroove.com. I quite like the sound. It is a very dynamic overdrive/fuzz type effect which is based on the schematics of a Dumble Amp.
Recently I bought the upgrade to the new version of IK Multimedia ARC. They say it has better resolution in the bass area. I wanted to find out if this is really true, so I did some measurements with REW before and after ARC2.