in my oipinion, if you are going for the h100i, i would pay a bit more and buy the swiftech h220. Stronger pump, copper rad, better fans, better cpu block and you can open the loop to extend/modify it/refill it.
basically swiftechs goal is to bridge AIO and full setups, as if you bought this and wanted to go full setup later, the pump in the rad can work in tandem with a seperate pump, can change hoses/extend them, change the fluid. Theres even benches out that will show that its a better unit
all parts of the computer is sensitive to damage, some more than others. anything made of thin meta like the radiator or the heatsink on air coolers is sensitive to damage, and performance suffers when it happens.
i talt watercoolers were supposed to be more silent than air coolers lol.
not exactly, water coolers liek air coolers need fans, and fans generate noise as well but watercooling also has a pump which can make noise. the main thing seperating water cooling and air cooling is watercooling looks for fans with high static pressure to low noise and air coolers usually like air flow to noise ratio. What makes watercooling slightly different is that the heat is dissapated away from the cpu while air coolers is on the cpu. You can have a noisy watercooling unit if you tried.
edit: if you own an oem case, neither of the stated coolers will probably fit. oem cases lack fan holes at key locations, and lacks size to fit big AIOs. the most you can fit are lower end ones or lower profile ones generally.