I replaced my 240 mm AIO with a $130 air cooler
Life is too short to be caring about anything but cooling performance.

Ever since I built my first gaming PC, looked at the underperforming Intel stock CPU cooler, and realized I needed to buy yet another component, I've been using AIO liquid coolers of one size or another. At the time, it was a Corsair 240 mm AIO, as there weren't many options. That actually didn't fit my motherboard properly, so I got a Swiftech model, and to cut a long story short, it leaked. Not once, not thrice, but four times, leading them to send me a completely different model to replace it.