Worst combat system I've experienced: Bethesda's Elder Scrolls. When I am grinding, the last thing I need is a boring fight. It really takes me out of the game especially if I'm gonna be spending shitload of time in combat.
Good combat system(s): A toss up between Grandia's turn-based style which involves skill and character positioning as well as delaying and interrupting enemy's turns, Diablo's isometric point-and-click and Kingdom Heart's plain old bash-em-up without the Quick Time Event (I've never liked QTE and never will). What they have in common is all three games require you to pay attention to the battles and not just mindlessly tap X or left-click through the combat.
Good combat system(s): A toss up between Grandia's turn-based style which involves skill and character positioning as well as delaying and interrupting enemy's turns, Diablo's isometric point-and-click and Kingdom Heart's plain old bash-em-up without the Quick Time Event (I've never liked QTE and never will). What they have in common is all three games require you to pay attention to the battles and not just mindlessly tap X or left-click through the combat.