I bought some of the Litko, you can see my thread about it in this subforum, and I scored the top so it would have more surface area. I am not sure that was needed, it held the Wolverine pretty well. I have not got around to basing everything that was missing on one the collection I got yet. I also bought some of their wooden ones to test out, but I think the acrylic has a bit more weight, so I will use that for heavier mechs.
With the acrylic Litko I am thinking about just leaving them alone so the 'base' looks like what is underneath.