I have used both the base from Brambleberry and from WSP. In my experience, the WSP base was terrible. I found it to sweat nearly as much as regular MP. It also became very soft and mushy with use, and I typically threw half a bar away. The Brambleberry base does not sweat at all, and stays solid to the last little sliver. The base does reharden quickly and it is a little more drying to my skin, but I think for embeds it would work well.