I have an original Athena equipped bike that I bought new in 1988? That was a long time ago.
Athena is very well made, jewel quality finish and it has wonderful asthmatics.
lt was the entry level group so it is heavier than Chorus, C-record.
Athena functions as well as any Campy from that era. It would probably last forever but will never shift as well as Shimano 105 from that same period.
I personally would not trade it for 600 or 105 because I am just a fan of that era of Campy parts.