Undervalued gen AP is the 39mm Chrono, which would be around $12k and a sound investment that will appreciate.
Thats exactly what i think so i Love AP but the gen ROOs are not worth it except a few exceptions.
I have owned around 20 reps and been to a lot of dealers and watch shows and what I have come down to is.
if you buy a gen then buy something that you truly love and will still wear in 5 years. And don't buy a new ROO at the boutique as it will loose value. All ROOs I have seen loose value. 39mm ROs do not. Good limited editions do not either.
for Hublot and PAM just stick to rep they are really good.
My absolute AP favorite was the AP diver. But the rep is so good it makes no sense to go gen here.
so what I did was get a gen AP 39mm Chrono Limited Edition which I love and is special to me a gen Rolex GMT master 2 BLNR as I travel a lot.
so the AP does it feel much different, yes and no. Some parts have better detailing but for the most part it's just the ownership and once in a while you meet the other watch nut that goes awwwww nice watch .
Rolex is a different story. I have a full Franken GMT master 2 and that got me to buy the gen. The rep is super comfortable but the gen is even better. The movement is awesome on the gen. Rolex is just amazing especially as gen. Not the detailing but comfort and durability. And the price for the gem and service is not that high but has amazing prestige and presence.
So I love my two gens but also all my reps. Especially going out not needing to worry to get a scratch on your rep.
if you buy a watch especially gen try to anticipate a value increase or decrease of the watch. Because with Rolex you basically make money while you wear it so there is less buyers remorse