I never say anything is the "best" (at least not in our hobby), but I like the LP Gear Zupreme headshells. I have used them with my Hana SL on my old Technics SL 1200 MK2. They come in 10 and 12 gram versions and have an easy to use azimuth adjustment.
SL-1200G/Hana ML Best Headshell
I have been looking at a Titanium and Carbon Fiber headshell. I think one is 19gm vs 12gm. The ML has published compliance and weight, but I can't find published figures for the Technics magnesium arm? Anyone have suggestions as to best way forward when looking for a headshell?