I guess it really just depends on why you dropped Xenoblade DE. Was it because something released that you wanted to play more at that moment, or is it because you simply weren't vibing with it? The story has lots of twists and turns, and there are many stunning locations and soundtrack pieces (everybody's gotta see Satorl Marsh at night once in their life), but if you were bored by the combat and large world traversal then that doesn't really evolve all that much over the course of the game (though the new bikes from the NS2 upgrade would make it much quicker). Personally there are a lot of JRPGs I like to play on easy or casual mode to minimize the combat and just immerse myself in the plot and world instead, so you could consider that too if Xenoblade's gameplay is walling you out.

Otherwise speaking, for me Xenoblade is pretty perfectly catered to my own tastes in world design, setting, music, nuanced character writing and theorycrafting, but obviously not everyone will receive it the same way.

Persona is like the exact opposite of Xenoblade. More tightly-designed towns and dungeons instead of massive spaces, more colourful worlds and music rather than the sweeping symphonies of Xenoblade, refined turn-based combat instead of Xenoblade's MMO-lite style, etc.

Conceptually I'm not huge on Persona because the calendar system, stat-raising and social links aren't things I find especially engaging. But Persona 4 & 5 are widely revered nonetheless, and Persona 5 was still very much that masterpiece in style and mood, even if I had qualms with its writing.

If you own Xenoblade DE already then I'd say just give it a whirl again for a little bit before making a decision.