Having looked at Metrels' website it looks as if the BetaPAT MI3304 would be more suited. It looks as if it alone has 110v testing capability which would be useful especially in College environment where they could have power tools at that voltage.
I myself use a couple of Seaward Supernova Plus and although the inbuilt transformer makes them heavier it more than makes up in terms of versatility.
Hope this helps.