I'm asking this kind of late as I have a brand new 10" L5 sitting in my room with the R/T box. I'm being told by some people this is not the greatest sub for sound quality (which is what I'm after) and that it's a mediocre sub. So what do you guys think? I've heard dual L5 10" and thought it was great. Am I gonna want a new sub soon after installing this one?