I hate to say this, but they all sound different. You would be well advised to try a few different ones before settling on one. The one I use is, unfortunately, no longer available. I do like ones that allow you to adjust azimuth. In terms of weight, too much weight is not your friend.
Removable headshells
Requesting input about headshell weight. My project is a 1983 Linn LP12. The tonearm will be a Jelco SA-250S. The cartridge will be a Sumiko Moonstone. The Moonstone compliance is 12x10-6 cm/dyn, which is at the lower end of the medium range. The Moonstone weight is 6.5 gm. This is my first go round with a removable headshell tonearm. My question is, how concerned do I need to be about the weight of the headshell? If I am understanding all of this stuff correctly, it seems that I should pick a slightly heavier headshell. Correct? Of course all suggestions are welcome.