I'm vey familiar with the SDS. I think it would make a huge difference in playback particularly if you get a very good power cord and Stillpoints to use under it. I think you would be astounded at the increased level of performance of your TT.
SDS or phono stage
I have a VPI Scoutmaster with Soundsmith Zephyr Mk II cartridge, jmw memorial arm, a stainless steel vpi record clamp, playing through a Musial Fidelity KW500 integrated amp with on board phono stage. Sounds quite good, but my question is this: would I be better off at this point adding an SDS or an outboard phono stage? Or both? In what order? Thanks!