Looking for an Rack server

Hey, Here I am for discussion about Rack Server, As I'm Looking for the product from many days and already taken advices with many of my friends and family but still there's a confusion in Between Two things, Please let me clear 

I Choose Rack server for me is :- https://www.dell.com/en-us/shop/cty/pdp/spd/poweredge-r250#techspecs_section

However, I have gone through a range of Lenovo Rack server as well:- https://www.lenovo.com/us/en/p/servers-storage/servers/racks/77xx7srsr25/77xx7srsr25

Please suggest which Rack server should I go with?

Thanks!