I have a Park Campag bearing puller, works just fine, most instances of them snapping are due to horrendously seized bearings or people not removing the circlip that holds the bearing in place, in which case the tool is designed to fail before it damages your posh Campy cranks. People are just more comfortable blaming the tool when they really should have RTFM’ed.
Either way it’s got the usual Park lifetime warranty too, so if I do ever snap it I’ll just get it replaced.
I don’t have any Campag equipped bikes ATM so if you want to borrow it get in touch.