Honestly, I have an FX 8320 OCed to 4.3Ghz stable and I have a Hyper212 EVO. Its $30 so even less in Euro. I have no thermal problems. I wouldn't bother with the expenditure on water cooling, because until you start shelling out some serious cash the EVO will either be on par or beat the lower end water cooling systems. I'd do research on this topic before you decide. There are a ton of threads on this and most say go EVO unless you want a high end water system, and thats only neccesary if your doing some intense overclocking
Current Rig:
FX 8320 8 Core 4.3Ghz Processor
EVGA GTX 760 GPU
8Gb Gskill DDR3 Ram
GA-970a-ud3 Mobo
Mod Xtreme Pro 600W PSU
120Gb Samsung EVO SSD
500Gb 7200rpm barracuda
Hyper 212 EVO CPU Cooling Fan