So i have a Corsair Obsidian 250d with an intel i5 2500k and a mini itx gigabyte motherboard with an amd radeon 7770 and I am looking for a good but not overly expensive water cooling unit that will fit in my case. Unless a water cooling kit isn't the best way to go but I just like the idea of having a water cooled computer.
Also @geoman798, depends how much you want to spend and how much you want to overclock that CPU. You'll probably get a bit farther with the H100i. Whether the extra cost of it is worth the extra Mhz is subjective though. Both'll keep it adequately cool at stock though.