I've heard of it and from what I've been told, it's one of the best RPGs of the 16-Bit era. I can't remember who it was that spoke so highly of it. I think it was Highwaystar101 but they made it seem even better than the almighty Chrono Trigger.
I hate to say that I've never played it but I'd like to. Maybe somebody will port it to the eShop or something.