Tom,
I'd guess most Galibier users site the table on a floor stand, especially if you have the added benefit of sitting on a concrete floor. From there, I'd say the field is open - Thom favors building a sandbox with an aluminum top plate that beds into the sand by virtue of some interface between the top plate and sand; several other users have successfully utilized granite or other such stone materials. General consensus from most users is that wood (be it MDF, solid maple or other) is not an ideal top plate material. This is a case where experimentation is in order - the path to an inert surface is frought with variables, including the type of floor and stand construction. You should carefully read over the Galibier FAQ page to get a better idea of the types of surface materials available, as well as strategies for finding the best stand for your situation. -Richard