Front Mission is a futuristic tactics-RPG game. You battle with giant Robots and can customize them entirely, from armor to shoulder equipment (which can be Shields or Missiles). It also has a very cool storyline imo. Try it, I highly recommend it.
Yea try Suikoden and Phantasy Star. Suikoden really impressed me with the voice acting and cutscenes - it really feels like an anime. The only downside is that there are so many cutscenes, I ended up skiping most of them to get to the action. But its a great game.
Phantasy Star feels like a MMORPG that you dont have to pay for. It has an online mode where you team up with friends on missions, which is cool. Only problem is that its a bit too short and ends up getting a little repetitive, but its a change of pace from other RPGs.
About CT, try going further into the story. It's an amazing game.
Some good DS games are MKDS, Star Fox Commando, Suikoden Tierkeis (this is a anime-style RPG with voice acting and stuff), Phantasy Star 0 (action RPG), Chrono Trigger DS, New Super Mario Bros. I dont have many DS games but those are some I played and enjoyed