Which IWC I should acquire in my near future ...

I love IWC very much.  I am collecting IWC since 2012.  

And now I have the following IWC watches:

1. IWC 510106 Portofino Hand Wound Eight Days

2. IWC 544401 Portuguese Regulateur

3. IWC 326506 Pilot's Watch Mark XVII Edition "Le Petit Prince" (1 of 1000 pieces)

4. IWC 500908 Big Pilot's Watch Edition "Le Petit Prince" (1 of 1000 pieces)

5. IWC 503801 Big Pilot's Watch Perpetual Calendar Edition "Antoine De Saint Exupery" (1 of 750 pieces)

6. IWC 501007 Big Pilot "Tribute to 5002/Safari" (1 of 100 pieces)

7. IWC 506101 Big Pilot's Watch Edition "Black Carbon" (1 of 100 pieces)

8. IWC 500432 Big Pilot DFB Limited Edition (1 of 250 pieces)

9. IWC 500431 Big Pilot's Watch Edition "Alexey Nemov" (1 of 50 pieces)

10. IWC 395503 Pilot's Watch Timezoner Edition "Le Petite Prince" (1 of 1500 pieces)

11. IWC 377725 Pilot's Watch Chronograph Edition "150 years" (1 of 1000 pieces)

12. IWC 379904 Pilot's Watch Double Chronograph Top Gun Carlson (1 of 50 pieces)

13. IWC 325311 Pilot's Watch Mark XV Spitfire

14. IWC 372301 Aquatimer Split Minute Chronograph

I will be 60 in this year,  So I am thinking which IWC watch worth me to buy in 2025. 
Anyone please provide me some advices.

Thanks in advance ...
 

Wow, Elton that certainly is an amazing collection. It seems you do favor the pilots, so I would suggest the Pilot’s Watch Performance Chronograph 41 Mercedes-AMG PETRONAS Formula One™ Team. There you can add a new model and a new material. I have seen a few Ceratanium bracelets out there paired with the Pilot’s Watch Chronograph 41 TOP GUN Ceratanium®. That would be nice to see on this Petronas model...

IW328209 - Pilot's Watch Mark XX Patrouille Suisse ?

250 Limited Edition

If I see your list above that includes Portofino, Portugieser, Pilot and Aquatimer I would clearly vote for the new Ingenieur. The Ingenieur line is missing and is one of my personal favorites, too. 

Remains the question which version you should acquire. Of course the dial color of the steel versions is a matter of personal taste but I would really check out the titanium version:

https://www.iwc.com/us/en/watch-collections/ingenieur/iw328904-ingenieur-automatic-40.html

Amazing collection! Congrats!

Considering your love to pilots I'd suggest IW503604 BP PC Top Gun Ceratanium with ceratanium bracelet. I believe it will be great addition to your collection.

In my opinion it is time to think to a vintage, so why not an ingenieur 666 or 866 just to start?

Ben, Thanks for your suggestion.

Ceratanium is one of material that I want to have in my collection.

I ever looked for the following IWC watches:

-- IWC 389104 Pilot Chronograph "Top Gun SFTI"

-- IWC 387905 Pilot Chronograph "Tribute to 3705"

-- IWC 371815 Pilot Double Chronograph "Top  Gun Ceratanium"

However, I am still thinking whether I should go for Ceratanium or other material likes Red gold or Platinum:

-- IWC 502628 Big Pilot Perpetual Calendar "Red Gold"

-- IWC 500202 Big Pilot "Platinum"

But no conclusion is reached yet ...

Giuliano, thanks for your suggestion.

For Vintage IWC watches, it seems not easy to find in Hong Kong ...

Roman, thanks for the suggestion.

I like Pilot much but IWC 503604 Big Pilot Perpetual Calendar "Top Gun Ceratanium" is too expensive for me to collect.

I prefer to use such amount of money to collect more other IWC watches ...

Lyles, thanks for the suggestion.

In my collection, Ingenieur line is missed.'

Currently, in my mind, the following watches are on the list:

-- IWC 322711 Ingenieur (Pink dial)

-- IWC 322712 Ingenieur (Brown dial)

-- IWC 328903 Ingenieur (Aqua dial)

-- IWC 328907 Ingenieur (Blue dial)

But it is still thinking (Maybe, I will wait for Watches and Wonders 2025, that IWC will launch more new Ingenieur watches) ...

David, thanks for the suggestion.

IWC 328209 Pilot Mark 20 "Patrouille Suisse" is good, 

but I like IWC 328210 Pilot Mark 20 "Mercedes-AMG Petronas Formula One Team" more ...