Sounds like you've already made up your mind and are looking for confirmation, which you've already received...sorta.
That's kinda right. I have had two x570 which had fan problems (might be just fault mobos) - so I'm trying to avoid x570.
I want to get something "new" which will be suitable for better CPU in future and has PCIe 4.0 if I decide to change GPU in future or get NVMe 4.0. That's why I want to get B550.
I have choosen this 2 MOBOs as they are on the "cheaper side" - if you can say so with their prices.
I didn't made up my mind between tomahawk vs aorus pro, that's why I came here to ask people who have way greater knowledge than me in this topic.
I'm also trying to decide between these two boards. Currently leaning towards the Aorus pro because of slightly higher advertised ram speeds (silly I know) I also feel 2.5+1 gigabit network is kind of pointless. I can get the Aorus Pro AC for same price as the tomahawk, and 2.5gb + wifi/bt seem more useful. Last but not least I have better experience with Gigabyte than with MSI.
The Aorus Pro only support sata m.2 in the first m.2 slot, but I don't mind that.
Guess I will have to ram qvl for the cheapest supported fast memory before I make my final decision.