I would lean more towards the MSI Sea Hawk based on the reviews. HardOCP was definitely more enamored with the Sea Hawk than Hardware Canucks was with the EVGA Hybrid.
Here's a review of the EVGA Hybrid where they do some comparisons with the Sea Hawk:
http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/70502-evga-gtx-980-ti-hybrid-review.html
Quotes:
"Since EVGA uses the same Asetek OEM’d water cooler as MSI (though the Sea Hawk’s has been rebranded with the Corsair name), the radiator / fan unit looks almost identical at first glance. While the single thickness radiator itself is a direct clone, the fan doesn’t have any integrated LED’s and sports a slightly different set of specifications. Whereas the Corsair-branded fan operates at a maximum of 1700RPMs, this one is rated to 2000RPMs at a slightly higher decibel range while the static pressure envelope is nearly identical."
"For those wondering, the PCB’s layout doesn’t depart one iota from NVIDIA’s reference design."
"On the flip side of that coin we have MSI’s recently launched $749 ($999CAD) GTX 980 Ti Sea Hawk, a collaborative effort with Corsair that’s obviously meant to cut deep into the Hybrid’s market share. It offers higher clock speeds and a greater amount of fan speed adjustability in a nearly identical package."
And the MSI Sea Hawk:
http://www.hardocp.com/article/2015/11/16/msi_geforce_gtx_980_ti_sea_hawk_video_card_review/#.Vmzex_krKUk
Quotes:
"You can't buy a faster, quieter, colder GTX 980 Ti than the MSI GTX 980 Ti SEA HAWK."
"we can say without a doubt that if you have the room for the radiator the better video card all around is the SEA HAWK for the following reasons. It has liquid cooling built in, this provides a quiet operation with an extremely cool GPU that has the potential to be the best overclockable clock speeds. In addition, just at its base out-of-box overclock because of the liquid cooled GPU it is able to achieve a higher GPU Boost clock speed in games than any other video card, offering performance that blows away a reference GeForce GTX 980 Ti card's performance."
"MSI also uses top of the line Military Class 4 components, including the DRMOS, Hi-C CAPs, Super Ferrite Chokes, and DARK Caps. These components will drastically improve the video cards lifespan, while ensuring optimal energy distribution on the board."
"The MSI GTX 980 Ti SEA HAWK achieved the highest overclock we have experienced on a GTX 980 Ti to date. This video card was designed by MSI to achieve its highest manual overclock using MSI Afterburner. Afterburner has complete compatibility with this video card, developing conditions that greatly improve overclocking frequency and optimal environment."
"The temperature is the most interesting part of this conversation, in our opinion. The MSI GTX 980 Ti SEA HAWK stayed icy cool, idling at 23c. It increased to 36c under load, compared to the AMD R9 Fury X at 53c. When we overclocked the SEA HAWK the temperature rose to 42c, but with fans only at 33% we could accept that. Fan noise was virtually nonexistent when playing with the MSI GTX 980 Ti SEA HAWK. The fan on the radiator stayed at 33% at all times, which was ample enough heat dispersal to keep the SEA HAWK under 45c, even after overclocking."