Sorry if this has been asked already...too lazy to scroll back through pages of threads.
With the recent price drops on the 280s, I'm considering selling my 4870 and rejoining the Nvidia camp once again. Either that, or wait for a bit and take a good look at the 4890s when they come out.
I'd love to go crossfire with my 4870, but my creaky old P5NE SLI won't allow it. Now if I was to possibly come upon a brand new P45 board (Gigabyte EP45 DQ6...hint, hint, nudge nudge wink wink contest judges

) I could skip the 280 idea and stay with ATI. However, given my track record for contests, I'm not going to hold my breath on that idea.
So back to my question...worthwhile upgrade or waste of money?
P.S. Right now I'm gaming on a 22" Syncmaster 226 BW, but have been seriously considering jumping up to a 24" + monitor.