I think the collector is the one being modest, that's a very nice collection there Brook. I especially like the 2447 N.

You could go for the 1153 case but stick with manual movements by going for a 73353, 73453, 73653 or 73655.

I think there is still some mileage for you in the classic case though.

Jasper and Arno made a good suggestion with the 45 Dato in black, giving a nice balance between silver/white and black dials in the collection.

I'm also not seeing a Carrera 30 in there; all watches are in first execution, so none with second execution markers; no watch with contrasting registers and none with a Tachymetre scale.

Which leads me to suggest... (anyone see where this is going yet? :) )... a Carrera 30 7753 NT. Every "omission" above solved in a single watch! Good luck finding one though - it will probably be easier to work through those one by one or in pairs. And once you're there, you will probably find that the red Tachy scale starts calling out to you too. And that might be the point at which you open the 1153 can of worms!

Fantastic start you've made, I look forward to seeing where the collection goes next.