I'm biased. I prefer AIO's. I like the looks, the performance, the advantages a liquid cooler has over air, especially the software control air doesn't have, so for me, the nzxt Kraken x62 is a no-brainer absoultely yes, go for it. I have an x61 and love it.
With case designs lately, there seems to be a trend of getting away from top mounted radiators. Many of the smaller built mid ATX towers are sticking with a single top/rear port and 280mm /360mm fan/radiator support in front.
Which is fine. AIO's in front have zero to do with case temps affecting cpu temps. It does raise gpu temps, slightly, only 2-3°C generally, but other than that, there's nothing but airflow. So it's a minor trade off, better cpu temps for worse gpu temps.
Then there's setup. A fan has 2 sides, the intake and exhaust. If to mount the fans in back of the radiator, that's Pull, if mounted in front of the rad that's Push. It can make a difference. Fans get better ability at low speeds (under @ 1200rpm) in pull, fans in push are better at @ 1500+rpm. My fans don't really ever get over @ 700rpm, so benefit in pull. Being in pull also puts them closer to the gpu, so that also gets a better airflow feed of air than what push can supply, since the air scatters after exiting the rad.
So there are definite benefits to an AIO at times. They do have some drawbacks, but if you are set on an AIO over air, then that's already something that's livable.
Many stay away simply because of costs, but realistically there's not much, if any difference between big air and big aio. You spend $130 on an aio, or $90 on big air and another $40 on 2 more fans since the case only came with 2. Rgb is even worse with air, some fans run $40+ each, a decent rgb aio costing less overall, since it includes 2-3 rgb fans.
Benefits and drawbacks to both ways. The only recent cpu that pretty much requires the big liquid cooling is the i9 9900k, with everything else it's a personal choice as performance and ability in the respective ranges is pretty similar.