If you ask me, my preference, in this case, for Panerai, will always be the original one...
Same thought as Nicolas... The ETA Movement is I'm sure a more robust one, and to add, closer in design to the vintage Rolex movement used in the vintage pieces...
249 's indexes are actually also in ecru color, only more subtle compared to the new ones by Panerai, which I find, on some model too "dirty"
But of course you can't go wrong with the 2... The new one is of course a rarer example with a newly designed in house movement...
It's just I think that the original 249, is a more special piece
Best,
Sam