My sister is looking for a laptop to move cross country with. (She's gonna be checking the community frequently, so feel free to address things at her.) She will definitely choose a PC.
She want to know if you were buying a laptop and need it to hold up, what brands would you choose?
My questions for you would be: who has the best hardware? who has the best out of the box set-up? who has the best customer service? Is there anyone she should avoid?
In terms of 3rd party software, which systems hold up the best if she adds things, which bog down?
What are the base minimums she should go with to make her laptop still be a usable, if not fully functional down the road?
What questions does she need to ask beyond these?