10 Inch Tonearms

Why I like10 inch tonearms:
- 10 inch has more eff mass than 9 but still not so much as 12. I can always use heavier headshell if needed.
- bigger distance from spindle compared with 9 inch less vibration etc. Also 10 inch is very easy to transfer as it fits most of turntables.
-  12 makes a problem with closing of lid sometimes. Fiddling/setting if wall is close to turntable can be less convenient with 12 inch.
 

goofygoot 12 ich tonearm is better for spu as you can’t add weight and if you look into SME 3009 R versus 3012 R - SME 3012 R is the better for application from eff mass point of view.
Thus in Japan a lot of 3010 R was sold as they do have small spaces at home and it’s convenient.
Tonearm has to be convenient to use, to adjust and easy to change cartridge.
Technical blah blah goes later on - perfect doesn't mean convenient to use.