I think Octopath Traveller is an excellent RPG. I've been playing it most of this year. The music is similar to Final Fantasy 6 quality, though a little less amazing. The plot is well done and not predictable except for the happy endings. There is some grinding with monsters in order to be strong enough to beat the bosses and some bosses require unusual strategies which forces you to think but you can attempt to brute force them alternatively, its just much harder. I haven't decided who my favorite character is but I really like the secondary job system which lets you customize the character abilities some and get interesting combinations especially with the secondary abilities. One killer combo I found was cleric and dancer since you get constant magic refills after each move. Thief and wizard was another killer combo since thieves can steal SP. I thought that Olfric was probably the most boring character plot but still enjoyable enough. Most of the others are quite good though. I highly recommend trying this game out if you haven't yet.
Cheers!