ok i just traded my friend my 2 10" sony explode subs and a box for his ppi a 600.2 witch he re painted i would like to no did i get an even deal or did i get ripped off? is PPI any good? also what would be a good sub to put on this amp? he said it is junk cause there is no settings on it but if i just buy a equalizer and get a proffesional to install it and tune it would that be good? THANKS alot for any one who replies.