Since my Andymac sub installation (still going strong over a year later)... I have been left wondering if there is any more room for improvement. Having the non-bose set up I wondered if the standard system could benefit from a JBL MS8 with the OEM speakers. They do sound pretty acceptable since the JL W3V3 was added to the boot... OR... Do I use a high end SQ amp and uprate all the speakers? I've been reading a lot about DSP's and many say that it is the 'missing link' in the system or that they cannot go without it. Is it really worth it though? Does anyone here have a dsp or dsp amp installed? Any advice/thoughts appreciated.