I do love the 42mm Explorer II, but then I also own a Pelagos and the 8500, and 2500 PO's in Orange.
If I could keep my 2500 PO, I think I'd give up the Pelagos and 8500 for either the Sub or EXPII. I have a slight preference for the 42mm Explorer II as I have larger wrists, but I prefer the black Sub date to the LV, and I would make a great daily wearer too.