I just saw this post today (sorry for the late bump).
I was slightly surprised to see your answer, Warren.
I expected you to mention that (our hero!) Brian May used dual Eventide H3000's in his live setup to get those fabulous delays and faux-guitar harmonies.
I kept saving up my spare pennies (I was a poor kid putting myself through engineering university) to buy an H3000 but I never could afford one. Later, my interests went to Fostex, TEAC and Yamaha multitracks and syncing them to my DOS computers (and later Windows). So I never bought an H3000.
I'd be curious to know if the plug-ins are worth buying considering how many other digital effects are out there from WAVES, McDSP and others.