Originally Posted by DarkSpork
I really don't need anything hard hitting. I mostly listen to metal, I only listen to hip-hop on occasion. I've never had subs before, but if I get it I want it to be something that doesn't take up space and looks bone stock so it doesn't get messed with. The stock speakers in my Ranger with an aftermarket deck were fine, I think I'll only get subs if I still don't like the sound in my Focus after replacing the deck.
If you decide to go with subs, especially if you are going to an aftermarket deck, the stock sub and amp would be a major pain to put in. You'd be better off going aftermarket. And just because you have a sub doesn't mean you have to have a super expensive or insanely loud system. Just go with a 10", and get one that is maybe 200-300 watts rms. That will be plenty of the average person just wanting some nice low end.
Another solution would be to go with say the subthump or even the stock sub enclosure, then put in a nice 10", and then get your 200-300 watt amp, and mount it under the passenger seat. I had mine like this for 2 years. A small amp will sit there fine, not interferer with the seat or leg room, and keeps it out of sight, and saves space.