To be honest, unless you are irretrievably attached to Microsoft (and the Surface, although getting better after it's disastrous start, is rather different from standard desktop Windows), I'd get a maximum level MacBook or MacBook Air
Yes, it's more expensive, yes, it's unrepairable, but they really are beautifully built and the OS is rock solid. You would be
well advised to buy the AppleCare Protection plan (yep, costs more money...) but you'll have a machine that'll just work and keep on working.
If you have Windows stuff that you really can't live without then you can get Parallels to run a Windows VM (yep, more money)
For backup you can use iCloud and/or a solid external drive.
Yep, Mac is a closed shop and a closed ecosystem but unless you like farting around with computers like I do, right now a Mac is the way to go.
You can get the equivalent computing power for about half the price but twice the worry.
Mac (OSX, BSD, Linuxes x3, Microsoft, Solaris and a good few others)
