I want to buy a handheld

I am looking to sell my series x since I don't really have the time to use it anymore, and I am divided between buying an steam deck or a rog ally, if anyone has recommendations, or even if you've had both I would love to know your opinions. For anyone that wants to know what I play, I am mainly playing indie games, like silksong, and I also play games like left for dead 2, repo and I'd like to play warzone, but it's not the end of the world if I can't. I am on Linux on my computer right now so I can't use epic games cloud, and I pretty much exclusively use steam right now.

TL:DR, I want some advice about rog ally, steam deck, or any other models of those two devices, like the OLED steam deck, or ally x. I would also love some thing to look out for and good fyi's