Comments-Pure Silver Sound Cables / Interconnects?

When I purchased my current system I had to cut corners on the speaker cables and interconnects to make ends meet. After very limited listening to a couple, middle of the road audiophile cables lent to me, I followed some friendly advice and purchased Pure Silver Sound cables and interconnects. The cost was right, and their overall sound was quick and open relative to the copper wires. Imaging and frequency response seem to be excellent based on auditions with my stereophile test CDs. My overall satisfaction has been good, yet I still wonder what if anything I may be missing. Unfortunately, I have limited experience listening to similar SET/Horn systems with other cabling choices.

Since my finances have now improved, new choices are possible. Do I just have an itch for change, or should I be thinking upgrade ASAP?

Please share your thoughts on the use of Pure Silver Sound speaker cables and interconnects for high-end audio, in particular my system below.

Current System - Cary 300B SE monos/SLP-98P/Avantgarde Duo 2.0/Nuvista 3D/VPI MKIV-SME309-Clearaudio Beta Aurum

Thank you for your help.