Tbh I would save and get a gaming laptop instead, neither is a real substitute and planning on using them just to save money is a bad idea.

Steam deck is out of the question as your sole computer as it still doesn’t have official drivers to this day for windows, sure you can download third party ones but not everything is going to work. As for the rog ally, while better in that regards it still has it’s limitations in windows (16gb shared memory, it’s alr a little weak for some games to run e.g. allan wake 2, and no option to support egpu. the xg mobile costs as much as a new pc even if it exists in your country so it’s useless with all the sw issues it has as well)

Yes it’ll, that’s how anti reflective displays work. Get the glossy if you care about colors and brightness unless you somehow have a searing light pointed at the device at all times lol.

They used the chip upgrade for efficiency gains for battery life mainly while keeping performance around the same.

Won’t support vrr according to linus.