That's what this pedal is to me - Delicious! It makes my amp sing, especially since I have a Marshall TSL 122. At first when I had it I was using it with a Fender Mustang II V2, which just added more gain to the already overly driven amp, but then by putting it with a simulated fuzz pedal on it I got some really awesome distortion tones.
I've tried out other overdrive pedals like the Zakk Wylde overdrive or the Boss OD-3, but neither of them quite achieve the same tone I come to expect from the Tubescreamer-Mini. The build quality is great, I love the metal on it, the size, the shape, the colour. I do not like the two mini knobs for level and tone, but they don't bother me. This pedal does it all for me and I am happy to use it!