I don't think steel is "superior" to MDF, but the two materials sound different, the MDF being somewhat less forward, IMO. You can mass load MDF stands, as the PVC posts are hollow. For a small speaker like the Spendor, Skylan can make you up a nice 2-post stand that should do the job just fine. Don't skimp on the stands. They are part of the speaker/room interface and greatly affect the sound.