Charging to unlock the bootloader on the Zenfone 10 after dragging their feet on the promised solution was the last straw for me. I completed the survey putting good customer service level with SteamOS support

Do you have a specific budget in mind, what sort of games do you play?

I’m not sure what the used market is like in your area but I’d see if you could pick up a 6800XT, 1440p would benefit significantly from the additional RAM. Here I think you could probably negotiate to £350-£370 or so?