Best Stand for Harbeth 7ES-3 Compact

I got a pair of 7ES-3 and would like to obtain a pair of solid speaker stands for them.

Which stands work better - metal or wood? I read Skylan and Target offer some models. What about Lipinski Sound stands (though I couldn't find any info. about the stands on Lipinski Sound' website)?

In addition, what's the optimal height for the stands? 18 inch or 20 inch?

Thanks.