best cpu

I currently have a Dell Latitude E5470 with Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz 2.50 GHz It's getting past its sell-by date, with even the case cracking and pieces falling off. Looking at Microcenter (I have one locally) I see things with I5, and Ryzen 7, and I'm not up on the cpu's to...