Just don't spend $500-600 on a K800/K790 because it is not worth it, if you can get it between $380-430 then it is a good deal.
But if you are unsure about it, save your $500-600 and wait for Nokia N95, 5mp camera,A2DP,Stereo Speakers,Built In GPS Navigation,30 fps video, SmartPhone etc... and...