I recently bought a set of used full soft doors - the 2 piece Bestop versions. I like them because they are very lightweight and they keep me mostly dry when I'm running with just a bikini top and windjammer.
I have the factory steel lowers and soft uppers. I also have a set of upper sliders that I spraypainted black to match my soft top.
I'm pretty much no doors, just bikini top from roughly the end of March until October unless I have to do a major road trip.
I've never had full hard doors on any of my Jeeps so I don't know what, if anything, I'm missing.