New tonearm: wish to upgrade from DV 505

Dear Audiogoners,
I would like to get your advice for the best actual upgrade from an old DV 505 (mounted on a PX 100 M direct drice). Within the last 20 years, many alternatives evolved. I appreciate any of your valuable proposals. Da Vinci? Schroeder SQ? FR? Any suggestions are welcome.
Best regards r walter