Obviously, this pedal won't give you that 80's Marshall Hard rock style overdrive in an instance, but it has its benefits.
Although the drive itself has a sort of rubbery, lack of definition tone (as to be expected) it does make a surprisingly good boost pedal.
With the drive at 0, level and tone at max, this will take a flubby sounding combo amp's metal tone and tighten it up and add aggression.
I've used it for this almost exclusively and so I'd highly recommend it to beginner metal guitarists who want to improve their tone at minimal cost.
Good overall pedal at the price, but nothing special.