I have an SWR workingmans 4004,210,115 rig now,it works well for me with a Sans Amp, (I know Workingmans lower end SWR). I'd like to some day upgrade to AMPEG but people keep asking me why, telling me my SWR sound more then fine and the SansAmp really kicks. Is AMPEG really worth the money compaired to SWR? Will a SVT-4Pro sound $1300 better the my SWR4004 and SanaAmp? (which is paid off). I'm looking to get a 410 cab soon, should I SWR to match or Ampeg for better gear? I'd hate to through out ~$2000 on new Ampeg gear and find it wasn't worth every penny.