Having had a loan R710 for a few weeks I'd say the quality was actually fairly good.

A few years back a company I worked for had consultancy and installation services provided as part of a Dell deal, and they were provided by Unisys. So I guess there's some logic in them rebadging and re-selling Dell gear in return, as if nothing else it doesn't half reduce the amount of training their techies have to keep up to speed on!