I am not planning on overclocking it for sure. As you mentioned Pro 4 should be sufficient as far power handling goes. In that case would advantage would I get by choosing a more expensive MB with even better VRM arrangement? I am quite illiterate when it comes to motherboards to be honest. So please excuse my ignorance.
These boards use older discrete MOS-FET design VRM's, they are less efficient and run hotter than boards with modern DrMOS and especially smart power stages. So the advantage is cooler operation mainly and lower energy use. But even then only something to appreciate while running extremely heavy all-core workloads.
One thing about the Pro4 that is
a noteable plus is it has a much more massive heatsink on the FET's. That's going to be a help keeping FET's cool although it won't likely help with CPU performance.
Ryzen 3000 and 5000 works different from older CPU's unless you force it into legacy operating mode by fixed all core overclocking. In stock or even PBO modes it actually likes Vdroop so voltage stability isn't as important. That's something expensive VRM designs excel at so just not needed if not trying that.
Otherwise: the boards with the better power delivery systems also tend to have better feature sets. Things like more super-speed USB ports, USB-C headers for front panel ports, multiple LAN's, 2.5Gb LAN's, WiFi, and so on. And of course: programmable RGB headers. Lots of them.