Before I start an analysis of the pedal, I would like to say that fuzzes should be used with vintage Marshall's because that's where they sound the sweetest!

Upon strapping on my trusty Les Paul and plugging into my '69 Marshall Super Lead clone with the high treble volume set at 6, presence at 4, bass at 5, middle at 10, and treble at 8, I got ready to roll. I switched on the 70 and made sure all the controls were at a minimum except for the volume, which was at 12 o'clock. I gotta tell ya. This thing is hot! Very dark and smooth. It reinforced the honored technique of using your guitar volume to control your sound to a very great extent.
Upon dabbling with the mid knob, it really didn't make that huge of a difference. I preferred to keep it dimed just because it sounded more in the vibe of my amp. Here is the interesting part - Fuzz Knob. The fuzz knob did what I didn't think it was going to do. Instead of making the tone acid washed in a square-waved assault of garbage, it actually steadily increased the sustain of my tone. Discovering this was very refreshing and made for a great tool for crazy Hendrix leads.
As far as which artist's sound comes closest to the 70 pedal, I would have to go with later Hendrix, especially Band of Gypsies. If you love Machine Gun, you play the damn solo with this pedal, and ONLY this pedal. When having my Les Paul volume around 9, the tone was astounding! Infinite sustain and wail! For shits and giggles, I tapped on my Mini Deja-Vibe and about creamed my pants. The tone is just that great.
The pitfall of the 70 pedal is it's dark sound. Sometimes it just won't fit the situation even when rolling of your guitar volume. This pedal is definitely more suited for leads than rhythm work.
Grade: 9/10 Fantastic Value! If you love the later Hendrix tone, buy this now!