Things you need to know before buying a system
#1) it going to cost a fair chunk of change
I suggest pricing out a system, with everything you want before buying a headunit here and some subs over there
#2) there are alot of hidden costs, like installation if you cant do it yourself, wiring kits, wire, with subs you need an amp, so on and so farth
#3) If you get subs that "pound" pretty hard and you have stock mid's and tweets then your subs are going to dround out your vocals, which in return sucks ass!!!
Lastly if your planning on getting a system do it right the first time cuz it will cost less in the end
I would buy
Headunit( cd player)
A set of good Mid's and tweets
and 2 12" inch subs
Buy 2 amps one for subs and one for mid's and tweets
And then add in the cost of installation, and all that other 'Kiss Me''Kiss Me''Kiss Me''Kiss Me'.
As for brands and model numbers and that sort of stuff, I suggest going to a car audio place, and hearing all the stuff thats inside your budget and picking what YOU like best, not what other people like best....... Once you do all that
then come back here, and post to see whether it is anygood or not