Your numbers look phenomenal.
Have you tried running those monitors at highly scaled resolutions and under load? If yes, does it draw more power or get hot?
Yes I can get the fans up to noisy under load. But it doesn't happen as quick as on the 5500M.
The reality is if you pack 100W+ of heating capability in such a small space you're going to have to move a lot of air to cool it. Under usage that most people would call "normal" i.e. a bit of web browsing my machine is dead quiet with fans under 2000RPM.
It's a different story if I fire up some VMs with developer tools or do a big compile in XCode - the fans will spin up while work is happening and then spin down. If I did similar on my previous MBPro (2015 i7 Quad Core) the CPU would be throttled via kernel_task going high CPU. So far no sign of throttling like that.
To keep the fans at a low speed under high load does require using third party tools (e.g. Turbo Boost Switcher or Volta or voltage shift). But I'm happy enough with that. I do want the ability to chose between less grunt and a quiet machine versus using the full capabilities at the expense of fan noise. I would be happier if Apple included an option to choose between the two modes rather than needing third party tools.