Headshell suggestion for my Pioneer PL600 (dir drive)?

Try googling headshell material / Pspatial Audio / The Headshell ;https://pspatialaudio.com/headshell.htm

Magnesium alloy LP Gear Zupreme at around $90. Avoid cheaper steel ones. The AT suggested above looks to have a very short body and will be a drag to connect. I would avoid carbon fiber and wood at this point.

If Magnesium is the material to be selected, and a little lighter weight is desirable the Audio Technica MS-9, MS-10 and MS-11 are able to be found for approx' 50-70% cheaper then the Zupreme.

All AT Models along with the Zupreme will offer Azimuth adjustment. 

I use TechniHard as a TT's Platter Mat and really like the sonic it produces.

It has creates the perception of a Tonal Richness, when compared to a Gum Metal Tenuto Mat.

"NOROMANCE: I would avoid carbon fiber and wood at this point."

Is that due to the sonics or cost (or some other reason)?

IF you can find a headshell you like, it would be advantageous if it had adjustable azimuth feature

just an example, many exist

https://www.ebay.com/itm/125167166388?hash=item1d248b63b4:g:0xUAAOSwc19iF4e2&amdata=enc%3AAQAIAAAAwBaLV7oyOh8385pYFExHWruqpE9eG96X9l8D8XwtK0lEZnqTxwxC6TbIBRIuf5Xm8gA7CkwJbkcI16%2FVKOUlScXCCSHM7Chiu6jF7KKUPAz5rbi0JAUyGvUntiNtS71hrO8sf%2FNE4XMpzF1G5H31t3c8OTGrY1IF%2Bxzm3stCxWEtG5a8jqNLdD%2FdkscqFtpA9mZROWucsPpYW2j5ad7TTrj%2FX0t1v4GpwKZeudSjYRcs4g7C1Wjv1a6IAc1Spl0NdQ%3D%3D%7Ctkp%3ABk9SR-a7gtGnYg