These ones are better.
No such thing as a bad mini Omni
Fun fact:
The 3.25" ones are not only narrower, but they also weigh less.
And the screw holes. I’m salivating just seeing the screw holes in the pictures.
Don’t forget the switchable metal/plastic square/circular inserts!
And the rollers don’t wear down as much as either of the others.
Lets not forgot those amazing H-drives. Those extended circle turnings are just… (*****)