Hdr doesn’t work yet on any streaming for steam deck yet, that I know of.

I say just try the sd card for now. If you want more, I say go for a 2tb nvme.

Have you looked at this

Good modding 🤣

Have had an ally since a week after release. Besides the sd card issue (ended up upgrading ssd), it has worked great and performed as needed. Now, I am using my oled as the main driver and ally for when at work. I have a powerful rig, so I can run games via stream. If the deck alone, it isn’t enough.

But if it is going to be all you use, I recommend the ally. I say this because it will play most if not all your AAA games, maybe not at the best frames, but better than the deck (if you’re doing the full 30w).

Asus has been doing a pretty dang good job at keeping the ally updated. There is another big update coming out at the end of the month. How long they will continue to keep the updates going, who knows. I have had no issues with any bios updates, myself.

Happy buying and playing.