I was thinking of changing the factory sub on my 06 to a better quality aftermarket sub. Problem is, I've been thru many cars and many stereos, an we all know that sometimes when you opt for a "better" speaker it doesn't sound as good as the factory even tho its twice the speaker. I'm not looking for a crazy stereo. So, those of you who have changed it....does it sound better? If not, I was thinking of getting just a 10" self powered bass cannon. Something small that can be removed with ease. Is it an easy job to piggy back off of the factory amp to get power and remote to the cannon?