Thanx for all your help gentlemen (and ladies if there were any

).
But I think what I will do for now is get the Pioneer head unit and see how it sounds with the standard focus 4 speakers, I dont like to have my music so loud it deafens me, but at the same time there must be some sort of sonic equilibrium. I am 27 now, so gone are my boy racer days, and I am definitely not rich enough now to pimp my ride.
BUT music is a must in my car and if I can get a reasonable amount of bass from my standard speakers then I will be a happy chap.
If it does sound a bit cack, then I will get the amp, but right now I think I will return the 6X9s (Impulse Buy), and go from there.
Thanx to ALL for your help, I certainly learnt a thing or 2...!
Cheers,
EmissarY.