Public service announcement - the 6000's dropped in price when Dish moved the HD channels to nagra2 encoding, which hasn't been hacked yet. If the hackers break nagra2, Dish 6000's will zoom up in price again. I was using a friends 6000 last year while waiting for the 811 crushed black fix, but couldn't afford to buy it at the time because they were fetching $400+ on ebay. A loaded 6000 for around $200 is pretty good. It's a solid box. I happened to like the VGA output and connected the 6000 to a 19" computer monitor.
If you don't care about the return potential, the 811 beats the 6000 in just about every way and I'd buy the 811. Not too far down the road, mpeg4 will make both obsolete.