It depends on what you are looking for. I highly recommend anything with Shin Megami Tensei in the title as they have better turn base mechanics than pretty much anything anyone else releases and despite some teen pop stuff in the Persona series, the rest is genuinely good philosophy and moral ambiguity.

I'm not a huge fan of Tales type games as I find most of their plots just perpetuate the JRPG stereotypes and their battle systems are simple button mashers after awhile.

I guess I'd recommend Suikoden (IV is not as good as the rest of the series but its still better than a lot of other RPGs out there). I'd also recommend some fun SRPGs from Nippon Ichi like the Disgaea series.