I'm planning on building a system soon and need some help choosing between intel dualcore vs intel hyperthreading processor. I do a lot of video encoding downloading and surfing the web and playing mp3's a lot at the same time so I thought dualcore would be the way to go but I heard hyperthreading wasn't too bad at handling multiple tasks at the same time either, and it's cheaper. So, what I would like to know is how responsive a system is while running multiple apps with just hyperthreading. Can you encode video, play mp3's, surf the web and do other things without too much lag with hyperthreading? Thanks.