Is it really for your friend? :lol: or do you just want one of those two?
Assuming for your friend, a 7700? Or 7700K ?
If the 7700, same rules apply. An AIO is a vanity project at that point, and a similar 80EUR AIO will be more than sufficient.
If a 7700K, overclocking or not? If not, see above ^^^. If Ocing, personally, I'd opt for the Kraken X52.... but you wouldn't really go wrong with either.