According to Anti-Flag guitarist Justin Sane in this Guitar World interview, "My must-have effect pedal is the yellow Boss [Overdrive/Distortion OS-2] pedal. It’s a basic, old-school, meat-and-potatoes distortion pedal. When I’m going for a lead, I just crank it as much as I can." Full article [here](http://www.guitarworld.com/dear-guitar-hero-justin-sane-anti-flag-answers-readers-questions-about-gear-influences-songwriting-and-more)more
If you need a pedal give you sounds of punk, pop punk, light metal and a few other genres. this pedal will literally save your life. Get this and you'll soon never want to go back to just using that shitty overdrive on your amp.
With BOSS's popular OS-2 OverDrive/Distortion pedal, it's like having two in-your-face effects pedals in one. That's because, with it, you can produce all kinds of overdrive sounds, tons of distortion flavors, or a massive combination of the two. The OS-2 has four onboard controls (Level, Tone, Drive, and Color) which let you summon your sound. But, whether you drive it hard or give your tone just that perfect subtle crunch is up to you. Either way, you'll love the BOSS OS-2 with both single-coil and humbucking pickups.
I like it for practice, for songs I need Overdrive, Distortion or both!! It wouldn't be my first choice for a live performance because I'd have to manually switch settings (from overdrive to distortion etc...) but all and all a great pedal. Plus Boss pedals are badass!!!!!!!!
The Boss overdrive/distortion gives you access to a vast amount of sounds and allows for many different dynamics and styles.
The main thing I like about thing this pedal is what makes it unique, which is having a mixed overdrive/distortion tone. It's also good for a booster. I usually use it for a "big muff" booster for a more distorted sound.