Using 10 after changing a bunch of settings...in general unless you are doing control panel or whatever, it doesn't work that much different than 7.

The boot time is WAY better on the same machine, I have updated quite a few of them. Now a lot of consumer grade stuff that's older isn't supported.

A great cheap way into windows 10 for a laptop is an HP Probook 650 G1 or the smaller 640 G1. Completely supported by HP and a solid machine. Install a solid state drive and it flies.