Well, i got the XXX in, and all i have to say is it is ****ing crazy!!!!!! The SQ is actually a tad less than the RL-P, but the SPL is just downright crazy!!! On hard hitting songs it really feels like its gonna blow the car apart, its just downright violent sounding, absolutely insane. The only thing is there is alot of cone noise coming from the subwoofer itself, like a rattle-like noise, but other than that it sounds phenomal. The holes in the mounting ring weren't even penetrated yet. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif