One of the ‘50s or ‘60s editions has a see thru star
charts. That was neat but something you can find elsewhere.
The 1984 edition I got first has 2 volumes so maximum info for a recent edition.
Newer editions are more up to date but did away with a lot of tables.
All depends on what you use for it is.
If I were going to go to see I’d carry my 1984 edition since I have it and load the PDFs for 2002 & the most recent edition which can be downloaded free.
I would also carry The Mariners Handbook (Admiralty Nautical Publications NP-100) which you can pick up for about $40 used including
shipping.