Sorry, clarify: I replaced the Sony sub in my '14 with the factory designated Kicker, it was an improvement, but not really knock your socks off great. I want to say I found a really good deal from a dealer in Florida. Sony is definitely better than stock, but really only marginally. I think the problems occur with capacitors and nannies involved in order to not allow you to blow the speakers.
At the same time, I'm kind of over the whole aftermarket expense and gutting for stereo equipment, plus it has already caused enough hearing loss...I think?