Alrighty, restricting my recommendations to PS3 only, I'd suggest the following:
- Star Ocean: The Last Hope International springs to mind; it's got a real time battle system with a great deal more flexibility in movement, it's a fairly good story (although occasionally erratic, with long cutscenes that unload a lot on you at once) and, like most JRPGs, the cast is a mixed bag.
- Eternal Sonata sounds like a good midpoint for you between turn-based and real-time. The combat is turn-based, but you run around on the battlefield and attack enemies with combos, etc. It's not quite as interactive, but it requires strategy and attention, especially once the training wheels come off and it starts timing you before you take your turn. It's easily a match for Tales in visuals and audio, so it'll have a familiar feel to it which might draw you in, and the story isn't too bad despite occasional slowdown. That'd be the one I recommend you start with if you're looking to branch out a bit.
- If you like Eternal Sonata, or want something a little more light-hearted and easy, I'd say the Hyperdimension Neptunia series might be worth considering. You can pick all three up on one disc now and, whilst the first game leaves a lot to be desired, the combat gets refined as they progress, being reminiscent of Eternal Sonata from Mk.II onwards, only easier due to lack of time limits. Although they're more humour than story; it's played more for laughs than anything else.
- Ni No Kuni: Wrath of the White Witch might be your thing, but it might not. It's a very awkward game in many respects, as some find it dreadfully boring, and others love it. If you've ever seen a Studio Ghibli movie, put that into a game format. Literally. The studio wrote the story, and Hisashi composed the OST, and the visuals are designed that way. So it might be too slow for you in places, or you might be immediately captured by the charm it has. It's likened to Pokemon quite often, but I'd say it's closer to the old Digimon World games: you micro-manage your minions in real-time, but it's not quite as involved as other real-time games because of that.
- Dragon Age: Origins might be an idea. Combat for that is as slow or fast as you want it to be, and whilst the story is pretty stereotypical, you have a nice element of personal choice in who you side with, romance, etc. The second game is more action-based in combat (read: mindless button mashing) and Inquisition is a mix between the two, depending on your preference. By extension, even though they're not technically RPGs but third-person shooters, the Mass Effect games, also made by the same developer, have fantastic plots, and the futuristic setting might be more appealing to you than the classic swords n' sorcery you'll get with Dragon Age.
- Lastly, you might want to try the Atelier series. They're not so much about grand, world-shaking events as they are about the relationships between the cast members, and managing your time to get things done. The turn-based combat is very simple, but the other aspect of gameplay - synthesis - is painfully addicting. Seriously, when I was playing Meruru Plus on my Vita I was synthesising items in my sleep. I'd suggest starting off with Ayesha or perhaps Totori, as those are a little more story-focused than the others and, whilst Totori is a sequel to Rorona, you'll only not know who a couple of characters are. You can get the Arland trilogy all in one package now too, although that has the original Rorona, which is a dated, glitchy mess in places. Rorona Plus would be the better option if you wanted to start from the beginning. The Arland trilogy has more charm, but the Dusk trilogy has more beginner-friendly gameplay.
I could recommend a couple of others, but based on what I know of Kingdom Hearts and in comparison with the Tales series, I think those would probably have the best chance of appealing to you. Probably. xD
Also, if you have a Wii or Wii U and haven't played Xenoblade yet, I cannot recommend that enough: it ticks all of your boxes for story and battle system and it's easily the greatest JRPG ever created besides. xD
I...can't stand that pairing, haha. Well, I don't mind it, but I never saw even the slightest hint it was anything other than unrequited. It was amusing to watch Hubert struggle with it in-game, though.