Well welcome to the boards. It depends on what your preferences are really pioneer makes decent stuff, infinity, jl audio (if you want to pay their ridiculous prices), diamond audio (a little more expensive but worth it), image dynamics....many more I would say first shop around and look at and listen to some of the different brands, find out what you like / dislike about the various brands and models, and DEFINITELY get specs and read up on them before buying. The worst thing you could do IMHO is to just go and buy something based on someone else's opinion of it. Good Luck
