My dear frnd i have read the whole discussion that's going on in the forum. According to me wht i can suggest for such a high configuration i won't suggest to go for a watercooling unit. what i think would be best is something like this which i prefer to get for myself too:
Proccy : i7 975/980
Mobo: Asus Sli mobo/P6T Super Computer or same high end series from this range.
RAM: 24gb Corsair XMS wht Sams suggested
HDD: 2gb internal + 4gb external 800 firewire/usb2.0
Drive: 3 dvd writers/ blue ray drive i don't think is worth for a pc
Monitor: 26" - 30" Full HD but not 2550 resolutions bcos those monitors i have searched are too expensive. One model is from Asus and other is from IBM both cost around $8000 to &10000 so its been a foolish idea to go for them.
Cabby: Good full tower from coolermaster, thermaltake, tagan any can do.
SMPS: 1000 - 1300 for sure not less than that in any case
GPU: 2gb 5790 or 4gb 5990 any one GDDR 5
Keyboard + Mouse + Pad: As per your choice
Coolers: 1 Highend cooler for proccy, 1 cooler for RAM, 1HDD Cooler, 12mm Fans for cooling the max a cabby can support.
This is the final thing that i am thinking about finally. Need inputs from others but i feel this kind of config can be the best in high end range of 200k - 300k. Comments are welcome
IMHO this is wht it should be seriously.