Bill,
The PMH1000 doesn't have enough power for most. It's one of the older Beheringer power amps. All the newer models have alot more noticable gain. I would also recommend a new Yamaha called the EMX 212S. It's stereo, great effects, 200Watts per channel (clean and loud!) and it's built like the Mackie and the Behringer. It's light weight with a plastic cabinet and not very deep, like the other brands. The price is in the $350.00 range and you get a great mixer.
The Behringer that competes with this is the PMH 880S. Both have three band EQ on each channel and both have master 7 band stereo eq's on the mains. You can use the amps in stereo or use one as main and one as monitor.
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George Kaye
Kaye's Music Scene
Reseda, California
818-881-5566
www.kayesmusicscene.com