For its price, I consider it an excellent choice. I've had it for 3 months now and I love it. The silver function (if you hold down the footswitch, it activates) doesn't have any significant difference from the regular function, it just gives you a high gain feeling instead of crunch, but nothing crazy. It also works as a clean boost if you lower the gain and increase the output. You can do a lot with it, and it has a huge range of gain. I would say it easily becomes a distortion pedal if you max it out + silver.

Dual function. It does what it promises, boosts highs and functions as a clean boost with the treble knob at 12 o'clock.