@edscoble the UN-7x have nicer spindles (both in material and machining) The removable cups also mean you can can move the same BB between a BSA and Ital frame by switching the cups.
But really, if you want the best Shimano square taper, try to find a UN-91. They're essentially 7410 DA sealed BBs that come in more sizes.
Surprised no one has brought up White Industries...
The Ti ones are great for BB squeaks too!
@edscoble the UN-7x have nicer spindles (both in material and machining) The removable cups also mean you can can move the same BB between a BSA and Ital frame by switching the cups.
But really, if you want the best Shimano square taper, try to find a UN-91. They're essentially 7410 DA sealed BBs that come in more sizes.
Surprised no one has brought up White Industries...