Case - Still looking
CPU - I5 3570k
CPU Cooling - CORSAIR Hydro Series H100
MOBO - ASUS Maximus V EXTREME LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 Extended ATX Intel Motherboard
GPU - Sli ASUS GTX680-DC2-4GD5 GeForce GTX 680 4GB 256-bit GDDR5
Resolution - 1920x1080
SSD - SAMSUNG 840 Pro Series MZ-7PD512BW 2.5" 512GB SATA III MLC Internal Solid State Drive (SSD)
PSU - Rosewill LIGHTNING-1300 1300W Continuous@50°C,80 PLUS GOLD Certified
Both have plenty of space, both have space for that aio watercooler, though, if you want a aio watercooler i'd get the h100i or the swiftech h220.
The HAF X is cheaper, the corsair has more quality and it's* more appealing, there's also the corsair 900d coming.