Hi. I have been hooked on home cinema since purchasing my Panasonic PTae200 projector last year. I currently have a pioneer DV575A DVD player connected to an Acoustic Solutions 5.1 speaker setup. Having just purchased a Pioneer VSXD514 AV amp I am now hoping to upgrade to some decent speakers from the likes of Denon or Mission. Now the bit where I feel a bit stupid. My new amp has a sub out phono. Can I connect this to both passive and active subs? If so, which would I be better going for. I know that active subs obviously have their own power supply, but if this is preferable, then why are passive subs so prolific also? Some of the subs Ive looked at (second hand) are: Wharfedale Diamond 810SB Miller and Kreisel VX100 Ruark Vita 50 REL Q50 Gale 3080 Are any of the above not worth buying? Any help would be much appreciated.