I feel this! I adore Etrian Odyssey for those same reasons. Koshiro's nailed something I don't see in a lot of JRPG composition: ambient tunes?! They're so long form and pleasant, and usually there's a catchy melody behind it that it's centered around. Plus, in the more recent games, the live jazz band performances make it feel soooo much more real. Hamauzu is the only other composer who seems to have a similar grasp.

Also besides music the sound effects are so pleasant??? The little ringy dingy when you get EXP, the walking steps, battle SFX. People tend to hone in in the cutesy artwork being misleading, but it's really all around pleasant.