Hi and Welcome Wayne and Debi
It depends on the asking price for the Giotto Premium .If its still in the box then you would expect it to be as new. If they are not asking much for it then go for it
I assume you are also factoringa grinder into your purchase
From what I can understand the thermal stability of the GPP is much improved over the GP but there are also modifications you can do to upgrade the GP.
Chris from Talk Coffee has evaluated the Giotto Premium Plus here.