My 2 cents.
Since your friend is considering pre-owned for both Sub and Sub LV, it seems his heart is keen towards the Sub. The only obstacle is pre-owned issue and $$ for brand new Sub.
Why not wait for a few more months, save a few more thousand and then go for a BNIB Sub. BNIB SubC Date 116610LN cost around RM23,xxx.
If he get the Datejust now, he'll still yearn for the Sub and will end up buying the Sub in the future. In the end, he'll end up spending more $
Cure the bug now and go for the Sub.
(although the bug will eventually come back in the form of other more fine timepieces, ie PP, ALS, AP..it never ends)
If any fellow WIS has a cure for the bug, please share the vaccine
