I can vouch very much so for Jaycar Amps
i just got myself a Jaycar AA0424 2x150wrms amp of ebay and im running it bridged to my Pioneer TS-W307D2 DVC sub (in series - 4 ohm total) that i got from strathfield as ex-demo (lol - the whole lot cost me $250) in a custom 36L sub box
the amp is pumping 500wrms@4ohm into the sub in bridged mode and for the sake of my kidneys and my parents the bass gain is off and the low pass filter is around 75hz (when optimum is about 200hz) to reduce the bass and even then its still kicks really really hard
ohh and running it from an LG LAC-M7600 deck - the only good thing about it is it has 4V pre-outs and only cost me $200
i should have gone for a JVC deck that would have cost me $15 more and would have had more features like aux in (which, according to the LG website, my deck is supposed to have.......)