For Tightrock owners: Is there a "sweet spot" where the drive sounds best or is it equally good in all gain ranges? I ask because I've had high gain pedals before that didn't do the medium gain thing quite as well as high gain, and I would like to buy a pedal that can do both equally well. For example: With the gain knob on 2 (out of 10), volume at like 6 out of ten does it have the same "quality" sound as when the gain is cranked? Does it do classic rock, for example, as well as heavier rock? I'm pretty close to buying one so thanks in advance for any help you can throw my way.