There are currently good offers on Wifi 6 devices. The DAP-X1860 is sold on offer, the WSM20 (not an extender plug) seems also attractive.
https://forum.openwrt.org/t/802-11ax-routers/10484/724?u=fodiator
https://forum.openwrt.org/t/diy-router-questions/162838/41?u=fodiator
Got a RE200 myself. Works, but limited by it’s ethernet port….