Hi,
I get the new Alienware Area51M R2 with an RX5700m! as eGPU. I get the AMD GPU because the possibility to get OSX working.
This was good choice - the rx5700m working out of the box! I get for now in Big Sur near everything to work :
eGPU,WLAN,BT,LAN,Keyboard,Touchpad,USB,TB, DP/HDMI out...