Which is better Kraken x61 or Corsair H100i GTX Hydro Cooler?

i've no experience with the Kraken unit. I dislike that Corsair one -- it can be difficult to install because the radiator is so large that it doesn't fit well into some boxes. [I use the H80 instead]

if you have the S340 case then id go with x61 kraken because its supported bye nzxt