I could be wrong but, trying to get SQ and being heard a block away like your talking about isn't going to be easy. You may have to choose which one you want more. Kind of like SPL guys saying they want to be the loudest SPL car but also be an SQ vehicle......not gonna happen. You can do both, but don't expect to excel in both. I've never heard anything form O2, since they are supposed to be super expensive, but the Beyma's get crazy loud and sound really nice, and for a lot less money than an O2.