I would agree with much of what has been said here. Yes, the Symposium Quantum Signature might be slightly dry in the mids, but the overall presentation is quite neutral, super fast, improved speed stability, and has a view to the back wall of orchestral recording venues I have only heard come from a Walker. The bass is killer and very well defined. I know the SRA, but I have no way to make a direct comparison. I know it is a great product. It would have been my second choice. I do not know anything really about the Minus K. I have been told by several people in the industry that the new Stillpoints are in a league by themselves and that they are a significant improvement when used with any of these great platforms.