Guys, let hell_of_doom be. If he hasn't changed his opinion by now, he's not going to.
Everyone is entitled to their opinion. If that means being a fanatic about one thing and a hater for another, let them be. If you have your own opinion, stick to it.
I really like the way the 4870's are looking. With 1/2 the memory, you get about 80% of the performance of a 280 GTX. That's not bad! But at the same time, that still means the 280 GTX is the winner in overall performance. Some day, we may see that full 1GB of memory being used, and when we do, the 280 GTX is going to crush the 4870, because the 4870 only has 512mb... that's the 4850/4870's downfall currently. It's a great card, but it looks like the 280 GTX may be slightly more futureproof. At the same time, the 4850/4870 supports DX10.1, so it's anyone's call which card is better.
If I were to buy a card right now, it would be the 4870. It's a fantastic card for the money! That doesn't mean the 260/280 GTX sucks though. They're great cards... but I like the 4870 better. I'm also playing favorites just a little bit right now... Nvidia has been clobbering ATI recently, and now that ATI has finally made a card worthy of praise, I think they deserve a little money for their efforts.