Is $700 out the door a good price for this amp? I have heard some negative things about the reliability of these amps, but they just sound so good for me. I need to go were the good sound and power is. Plus since I will be buying new it will have a warranty. The only reason I ask is that this guy at guitar center was very quick to drop the $749 before tax price to $650 before tax. Should I demand $650 out the door?