I've decided to change my amp and go with something a little bit more powerful so i can get the full potential from my speakers. Im looking at either the hertz he4 amp or the in phase ipx1004 any one running either of these amps? wondering if they are worth the money. Also looking at upgrading the front speakers to in phase xct601 components which are currently on sale at £88 instead of £179 (rrp) again anyone used these?