For anyone interested, I took the plunge on the DS Audio HS-001 Headshell and the Stein Music "The Perfect Interface Carbon Signature TT Mat". I'll work those in one at a time with my current Pure Fidelity Stratos Cartridge before I look at other carts. If I decide to keep two cartridges, I may also try to experiment with other headshells, the Yamamoto, AudioSilente, and Oyaide all come to mind.
Thanks again!