I have several thoughts.
First, I've had both. I prefer the bracelet and clasp and shiny bezel of the newer model, but I prefer the case and size of the older model. Right now I have neither. I was recently shopping for a 14060M and decided that they are just too expensive. I also found a nice NOS but it was $12 or $13K US and that's ridiculous, because the moment I put it on, it's lost nearly half its value.
I have a small wrist (around 6.25") and the new "maxi" case is just too big for me. Funny that the larger (42mm) Omega actually feels smaller.
Part of the reason I hate to spend 6,7 or even 8K on a 14060M is when I sold mine, several years ago, I think it was worth less than 5K. I hate to go backwards and pay more. I think the numbers are ridiculous, and I don't really understand why they are so expensive. They made millions of them...
You really need to find one of each version and try it on. How, is the hard part, especially since so many stores are still closed. I don't know how things are in Switzerland, but surely at some point the big cities will open and you should be able to find pre-owned models in stores. Of course, I don't know where you are, if traveling to somewhere like Geneva for a shopping day is feasible. For the kind of money that you are contemplating, you should take your time and certainly try some on. Don't worry, there will still be plenty available next month.