Currently, AMD Strix Halo based handhelds are the most powerful portable gaming devices out there, with the top three being the GPD Win 5, the OneXPlayer OneXfly Apex, and the AYANEO Next 2. Of these three, the GPD Win 5 has already started shipping. Problem is they're stupid expensive.
Personally, I will wait until I can run FSR4 natively on these portables, because FSR makes a pretty significant QoL improvement on these handhelds.
[1]: I don't think there's a way to link to it directly, but `PROTON_FSR4_UPGRADE=1` (or a specific different version if you'd like) is documented in the README in this table: https://github.com/GloriousEggroll/proton-ge-custom#modifica...