Hmmm ... l'd prolly say the Pana stuff is the best in the cheap range, but personally l'd only every buy pioneer or alpine. But BFYB, the pana's rate damn well. A lot of customers at work walk out with Pana stuff...though l really only sell alpine atm, just for the points! (anyone who works in car audio knows what l'm talking about!!)
Best speaker for $$$ is the new JL C5 splits ... decimate everything cept their bigger brothers, and even then, for the money, the c5's are better value.
I prefer alpine decks, but when it comes to speakers its def more JL based. And amps ... well Audison, for the money, l can't go past.