Yeah... There's a reason I have the APx525 and not the 555. I simply could not justify the cost of the 555. As it was, I lost quite a bit of sleep when I dropped a 5-figure check on the 525. The performance of the AP gear is out of this world too, though. And unlike just about any other piece of engineering software I've come across, the APx software is a true joy to use.
Tom
Tom