Would rao use the Unworked Designs patch for the proper Japanese difficulty? Vic and co.'s at times obnoxious translation is still there for better or for worse, raocow might find it obnoxious as well at its most "Vic Ireland", if his feelings on XSEED's work on Zwei!! are any indication. pholtos did play it with the patch on Yelsey's server and had fun.
I haven't played it yet but a lot of Working Designs published games suffer from increased difficulty on western releases which is a huge pain. They stopped this practice around... Arc the Lad I wanna say, a few years before they went under? Dragon Force, American!Shining Wisdom and Epica Stella/Vanguard Bandits might not have much difficulty boosts either.
The patch is available here if it's necessary. It's a quality ARPG either way.
Personally I usually play most of the Working Designs games in Japanese: Silhouette Mirage Saturn (fucked up balance in English, had the English script next to me tho), Popful Mail, partly Vay (kept getting distracted), Lunar 1 Saturn (for the sake of "more Saturn"), Lunar 2 Saturn (see above); or with the difficulty patches: Lunar 1/2 CD, Lunar 1 PSX, my final attempt at Vay.
Arc the Lad 1-3, I vary between Japanese and English depending on the phase of the moon ig, I've replayed Arc 1 so many times since it's roughly 7 hours long, and I want to start adding Arc 2 to my rotation despite it being like 30-40 hours, so I have to vary it up.