beets Good question! I also really enjoyed Persona Q, and got to the last area but didn’t quite finish it.
If you’ve never played an Etrian Odyssey before, I’d say either IV or Nexus would be the best place to start, depending on what you’re looking for.
With EO IV, you’re getting the first 3DS entry in the series, so it retains more of the “classic” feel of the DS entries, before they started layering on all kinds of crazy subsystems. There are interesting class combinations to play with, without too many to be overwhelming, and it will be the cheapest one to buy (if you are buying).
With Nexus, you’re getting by far the most quality of life features, and a big sampler platter of worlds, classes and music from all the past entries in the series. It also has four difficulty options, which is more than any other entry. However, you’re getting an insane number of classes to choose from, so the very real paralysis that comes from Etrian Odyssey party building is a threat. Also it’s still pretty pricey (again, if you are buying).
Happy to answer any other questions you may have!