Cost shouldn't matter.
Who said that having an almost fully compatible device needs to either be ancient or expensive? The Xiaomi Poco M2 is neither. In fact, it's one of the most powerful and affordable devices in the lineup. Released in 2020, it rocks an Octa-core ARM Cortex-A75, which is still performant even four years later.
Smooth sailing from here.
The Poco M2 shares some similarities with the Xiaomi Redmi Note 9 when it comes to the Ubuntu Touch port, and both are very performant. You can expect support for almost all device components which means that it makes a great daily driver.
Miracast-compatible
This device has the capability to wirelessly cast their screen or content to other Miracast-compatible devices.