Beware these tend to overheat and cook the SD cards. It's a known issue, some work great like mine, but so many do not! They will be releasing a new model in a few months that will address some of these engineering shortcomings.
I have both in the house, Ally is great but get the Z1 extreme model if you go that route. I do have to say the new Steamdeck OLED model is absolutely beautiful, I got one for my son and you can install EVERYTHING that the Ally has, so that would be my first choice if I were on the market. The...