The Stafford design is a very simple, yet effective method of emulating the AB pedals of a PSG and is particularly nice when bridging the gap between 6 string and PSG (which I was when I bought it).
I actually found it in a "Mom & Pop" shop and when I asked if they had any inkling where I could find a bender guitar, they pulled this one out and offered it to me at a "steel" of a price.
