I actually like FFXIII's battle system *dodges tomatoes*
Tales of Xillia was really good
Trails of Cold Steel I&II are solid with the linking and everything
Grandia II was really good as well
Bravely Second and Default were good
Points to FFX-2 for tranformations and a smooth, well paced system
Eternal Sonata had the nifty light/dark aspect to its battles