I own and enjoy the 313 on my Stabi Ref 2. The 313 VTA leans to a full, meaty sound, but still has the ability dig in and extract plenty of detail. The adjustments are so easy. I stumbled upon a video recently with the top dog designer from Ortofon. Leif is his first name... It was a setup video with an SME 5, where he went through VTA, VTF, Azimuth....it didn't appear as user friendly as the 313, so it made me feel pretty good. I have no experience w/ the 4 pt/9, but I have heard it may not be as full sounding as the 4 pt/11. I would speak with a dealer if your intention is to buy new...it could come down to synergy with the Stabi S. Are you leaning toward the black or gold. Nice table!!!