Depends on what you want.
I use to have the CoolerMaster MA620P, which is a 200w twin tower air cooler, only went to the 360 aio as I wanted the 8700k at 5ghz.
For the 2600x, you could go any one of them options and still get about the same performance. The MB500 will fit a air cooler up to 165mm even tho the website states 160mm.
Before I went with the 360mm AIO i was looking at the Dark Pro 3/4, Noctua D15 and the Cryorig R1.
It all comes down to what you want, I like air coolers, but with limited space i went with AIO.