I own a DA-2000 ES, and I personally would say to stay away.
I've owned mine for less than 2 years and it was great in the begining. Since getting the receiver, I had a set of Energy Veritas, go in the shop twice. The last time it took me about 2 months to get the speakers back, so I was reluctant to hook them up w/o tracing the problem.
The speakers are never driven hard and the receiver never clipped. Just out of curiosity, I got out the multi-meter and took some readings at the receiver's speaker outputs. These were simple resitance value tests.... all channels were fine, except one; approx 3 points different from what the rest of the outputs showed.
I took the receiver to a local dealer and did the same test that I had performed at home; white noise and same volume output. Sure enough I had a bad front channel, but the internal protection never tripped to protect the speakers. Sadly enough, the reciever that I tested in the store had a rear channel that was out of wack!
My receiver has been in Sony's hands for the past month and a half, waiting on parts.
-Todd