On Sun, 26 Apr 2015 13:28:49 +0100, John wrote:

Not really much to help you except to say that Lenovo are a
well-respected brand.

They used to be IBM's personal computer brand, of course, before all that
business was sold off to Lenovo (Chinese, 12% owned by a wing of the
Chinese government), who'd been actually building the machines for IBM
for a while.

I'd generally lean towards Dell as a first choice.