The rotary table with indexing plates sounds like it's a more universal setup. Those tend to have pros and cons, setups can take longer than a specialized tool etc.. I've been tossing around thoughts on this sort of thing as, longer term, I want the ability to make splined shafts, gears, etc. for robotics projects, lathe change gears, perhaps clock projects, etc..
I've seen some videos of people using various options to do it without specialized indexing tools at all, but I'd like a little convenience and I do occasionally wish I could do arcs with a rotary table.
It seems like one could mount a 4-jaw to either, so that feels like a wash to me. Indexing can be done with both. The RT can be horizontal, which could be handy.
Then there's the universal dividing head, but you need to have the ability to drive the table with it. I'm not sure I need to cut worm gears though. And I would have to build some method of driving the table with one if I went that way. I think this one is above my pay grade for the moment.
Though I guess one could get it and wait on the table drive capability, but it seems like overspending for capability I may never have use for.
I would like to hear from people that have used both what they would do in a home shop if they were to choose just one for the sorts of work I mentioned. Hopefully the OP finds the information useful.