Best model to buy while in Germany for resale

[rom33]

Hi, thanks to all who post for the information.

I travel to Germany several times each year and would like to buy a watch as I would receive the VAT on returning to the US.

I own a Datejust from the 80s that I wear occasionally.

Which stainless steel model would hold it's value best?
Have the best resale. I would like to wear it once in awhile but someday sell it.
i.e. Explorer II, GMT II, etc.

Again my thanks,
Mike