I can't use thumb balls, I want a large ball. I've bought these continuously since they were first released (now in a wireless version and cheaper buttons, but

I can't use thumb balls, I want a large ball. I've bought these continuously since they were first released (now in a wireless version and cheaper buttons, but same basic form factor): https://www.kensington.com/us/us/4493/trackballs https://www.kensington.com/us/us/4493/trackballs And for those who loved the old Microspeed trackballs: http://www.trackballworld.com/ http://www.trackballworld.com/