Unexepected failure in PTFE tubing - the more you know...

I've been fortunate to only have a couple of filament feed / AMS issues thus far, but last night I had a new failure that took a few minutes to troubleshoot.  Sent a file to the printer and heard the AMS whirring for an extended period of time compared to normal loading - then the infamous error beep.

Removed filament, repeat loading, same error.  Again - same error.  Again trying to watch the filament feed and nothing.  Finally looked at the back of the AMS at the initial point the filament exits the box and - viola!  (see photo)

Looks like I have worn through the tubing and the filament was just feeding out in the wild instead of into the printer.  Glad Bambu included spare tubing - quick replacement.

Any suggestions on replacement tubing to queue up for purchase or is the standard Bambu offering 'good enough' ?

Thanks!