I don't like Corsairs stuff TBH, it seems these days they operate on a good name but actually build pretty mediocre stuff.
I tend to Google what i intend to buy beforehand, if you Google "Corsair pump leak" you do get back a lot of results, Google "Kraken pump leak" and you get nothing, so i went for the X31 which has a 6 year warranty.
It also does its job well, it keeps my 4690K sub 75c @ 4.7Ghz - 1.3v (stress tested) while the fan doesn't even get to 1700 RPM, so its reasonable quiet.
Not bad for a £60 unit.
I did the same with my PSU, googled the ones i was looking at and excluded the corsair PSU's right away, ended up with the EVGA.
Very interesting, I googled it and really surprised to see people reported Kraken pump failed and it didn't ever leaked but send CPU temp through roof.
I was surprised to see a delivery on Thursday, it was brand new H80i GT send from Corsair in Netherlands so I won't open it to have it installed until I have both new GPU and backplate in first cos I was worried the new cooler could leaked on motherboard USB and switch cables. I ordered MSI GTX 970 cheaper from competitor plus nice cashback, also send enote to customer service to asked which revision I ordered then when I got revision detail and I will order EKWB backplate.
When H80i GT fail and leaked in future then I will switch to Kraken watercooler that don't leaked when pump failed. I googled that Kraken watercoolers was customised designed by Asetek and found list of watercoolers used Asetek designs:
Arctic Accelero Hybrid III - 140
Arctic Accelero Hybrid II - 120
Arctic Liquid Freezer 120
Arctic Liquid Freezer 240
Corsair Hydro Series™ H110i GTX
Corsair Hydro Series™ H100i GTX
Corsair Hydro Series™ H80i GT
Corsair Hydro Series™ H105
Corsair Hydro Series™ H90
Corsair Hydro Series™ H75
Corsair Hydro Series™ H55
CRYORIG A Series
EVGA GeForce GTX 900 HYBRID Series
Intel BXTS13X Liquid Cooling
NZXT KRAKEN™ X31
NZXT KRAKEN™ X41
NZXT KRAKEN™ X61
Thermaltake WATER3.0 Ultimate
Thermaltake WATER3.0 Extreme
Thermaltake WATER3.0 Pro
Thermtaltake WATER3.0 Performer
http://www.asetek.com/customers/available-from/
Pleased to see Asetek designed H80i GT for Corsair.