Hi,
5026 was an option, with cal 240 and a see-through back! On a different style 5120 shows the cal 240 todays.
5096 was also an excellent choice IMO. it was a smaller 5196 with see-through back on a cal 215. Very rare IMO.
5127 is a nice current choice, better on the wrist than on picture. I'd love to see a black dial platinum one appear, but have no idea if the 5107P was a hot seller or not.
5119 is like 5120 a very classical Patek Philippe design, if you like it, with see-through back.
So there are many choices.
Regarding appreciation, this is not a subject we discuss here. Let me just say that it is not something you should have much hope about with watches. Watches that appreciate are exceptions.
Cheers
Dje