I'm buying a new powersupply. Now, I need a good suggestion. 1) How much power do you think I'll need? [X2 3800+, X850XT which suggests 300W, DVD-ROM + DVD-R, 1 HDD, 4 fans, 1GB DDR2 800] I was thinking 450W, but will 400W be enough? Maybe 500+? 2) What brand would you consider out of the best? As in, which one from [Thermaltake, Antec, PC Power And Cooling (too expensive, can't buy), Enermax, FSP Group (Fortron Source)]? 3) Third and final question - considering your above answers, which exact powersupply do you recommend to me? I have a few on my mind, but I want to to see what the gurus use/suggest. Thanks!