H80i (80 euro) Or h100i (100 euro)?

If you don't have budget considerations and compatibility of the AIO with the PC Case then go for H100i.

Benchmark is made on certain specification and are for reference purposes. You CPU is Haswell and these CPUs run much hotter than ivy bridge or sandy bridge. So, in my humble opinion for your Haswell, you'll be better off with H100i.