AIO with quietest pump

I'm looking for an AIO to get my feet wet (see what I did there) with watercooling. I was wondering what would be the best, quietest AIO out there. I know I can "control" how loud a given watercooling system is by the fans, but not the pump.

What would be the best and quietest AIO, pump-wise? What I mean is two things:

1. No buzzing or high pitched sound from pump
2. No burbling from liquid/water

Thanks!

Some AIOs allow you to control pump speed as well. The one I tried from NXZT did via software, but the pump also died after 6 months and it's the only NZXT product I've used so far so I don't know if they're built well or not.

If you really want quiet, get a big air-cooler. You can't eliminate the sound of the pump, so AIOs are always going to be louder.

Getting an AIO is not really getting your feet wet, because it's all done for you. It's just different from air coolers.

The main purpose of water coolers is that they let you get cooler than air, thus getting a higher overclock.

On air, you will reach some maximum overclock while keeping the fans low and quiet. If you want to go beyond this, get water, but past here there are really diminishing returns.