I have a fairly large collection of distortion pedals and this is at the top of my list of versatile units.
This can go from a slightly overdriven sound to a very high gain distortion and for the extreme metal heads you can scoop the mids very nicely.
The unit itself is very compact, much smaller than most of my pedals and very very light.
With everything at 12 o'clock you get a really nice smooth distortion sound, a classic heavy overdriven distortion. Based on the range of tones this unit can achieve, I would struggle to justify the costs of some boutique pedals which sound nowhere near as good. The tone controls on this pedal are killer!
I have very few, if any, negative things to say about this pedal. For an all round (and it really is all round) pedal to delivery a very wide range of tones, for the price it is very good.
Highly recommended.