I pre-warn that I find it hard to not like JRPGs, I usually find at least 1 redeeming quality, that said:
1. Time and eternity just wasn't for me, semi-enjoyed the game play, plot and other things were just... well, bad.
2. Hyperdimension neptunia/mk2/victory - Yes to mk2 and victory, the first hyperdimension neptunia had horrific gameplay and on top of that had terrible optimization and lagged like no other game I've played.
3. I loooove the atelier series, it is a bit different but I find the stories of all the games funny at times and fairly engaging - The Ps Vita versions are the best way to play I feel, it is more of a play here and there than sit down and play for hours on end type of game.
4. Ah, Agarest... well despite owning all the collector's editions for every game in the series it fails to get me excited to play, the tactical gameplay style is quite fun and well done in the later games in the series, overall it is a decent series but not very memorable.
5. I can't comment on rune factory, they don't get released here in Australia and while I could import them, from what I am to believe, they are basically harvest moon games.
6. Tales of Graces F - YES, play it! While not my favourite in the series, it is very good. I cannot recommend the Tales series highly enough. Xillia is my recent favourite (after symphonia was for all of time), Vesperia probably has the least engaging story and the gameplay (specifically battles) isn't as good as the rest of the series but Graces f, Symphonia (the HD remake comes out soon) and Xillia are highly recommended. A+
7. Disgaea - Great series, gameplay isn't for everyone, but fairly humorous at times and fun.
8. Trinity souls of zill oil - Couldn't get into it myself.
9. Trinity Universe was decently fun but is overall not very memorable
10. Last rebellion - Poor, poor execution. Battle system is different but it just isn't a well made game.
11. Valkyria Chronicles is a game that I personally didn't quite get into but I can see why others would and I still recommend people give it a go.
12. Lair is the only other game on this list that I haven't played so I cannot comment.
13. White Knight Chronicles is.. different. It was fun while it lasted but the story is near non-existent and it's all very samey after a few hours.
Another game you might want to look at is 'Resonance of Fate' which had a unique battle system, good setting and was pretty fun.