you for sure need to go JL. its all about the quality. i just bought a sub for my car last monday. Its a W7, but instead of the 10", i just got an 8". its still just as sick though. i still need an amp for my car, but ive had the sub connected to some of my friends amps, and it hits just as good as a 10". i think im actually going to buy a second 8". it also depends on the size of your car, too, though. cause i drive a smaller compact type of car. So the 8" is most likely going to be louder in my car, opposed to a 10" or 12" in a bigger type of car. For sure though, get a JL, either the W6, or the W7. If you do get a JL sub, though, you will want to buy an amp also made by JL. Ive got a 500 watt 1 channel coming in the mail hopefully this week. so it'll be fully installed (with remote bass control) sometime at the end of this week. I'll post some pictures as soon as im done, and let me know if you need anymore help with decisions on subs and amps, cause ive learned a lot about it in the past couple of weeks, and id be more than glad to help out