H115i Pro and H150i pro are built for silent operation and looks. They aren't terrible but they aren't the best either. They are supremely overpriced and you HAVE to upgrade the fans to get any kind of good thermals out of them.
But the Corsair stock fans in general just suck.
https://www.youtube.com/watch?v=mb7n_b39F78
This guy claims on his H110i that his temps dropped 10C by changing the crap stock Corsair fans with LL140's
I have them too on my H115i (original) and it keeps my 8700k under 70C for stress loads in quiet mode. Look at Tom's 8700k review. That's pretty dang good for an 8700k.
In any case the Hydro Pro's are decent, with upgraded fans I imagine they could keep up with the better AIO's. Probably won't beat the older Corsair AIO's but they should get close enough.
Only reason to get the H150i at all is aesthetics, the H115i Pro is slightly better and slightly cheaper. If you just want an AIO that looks decent and performs really well, get an H115i. It's about half the price of the other two and outperforms them both.