Noise at idle is my concern, full stop. I don't want any computer I own to break my silence until I put it to load. End of story. I am not talking about full load. When I ask the computer to do extensive works - then yes, I will accept all the noise that it makes.If noise is your only reason, maybe think of getting one and utilising the 14 day return policy. My Studio Ultra at full CPU chat is quieter than the 2013 Mac Pro I used to use at work (at load) and also as quiet as the M1 Mini I've got sitting underneath it on my desk (I can't hear either). If I manually ramp the fans up on the Studio, it make noise, though nowhere near as loud and my 2010 Mac Pro, but on automatic fans, it's just as quiet as the M1 Mini, regardless of what I ask it to do.
I may be one of the lucky ones.
2013 Mac Pro is dead silent. At idle, or light every day tasks like browsing. So is the M1 Mac mini, and the Intel Mac mini 2018 that I have.
As I stated, I do not have the Mac Studio, and I do not plan to get it until all the noise posts here are present.
Not every part of the world has an Apple Store, to be entitled to 14-day return policy. In my part of the world, if I place an order for an Apple Computer, it is final. If there is a problem after I get it, then it goes for repair. There is not return. So I will not be buying a computer that is deemed noisy at idle.