Stop the hunt for games like Final Fantasy Tactics, I've got the only three games you'll ever need in the genre on this page. While I love Final Fantasy my favourite game in the franchise was definitely Tactics for the way it enhanced the tactical elements.
If you're unfamiliar with Final Fantasy Tactics series the game is still based on the original FF but with some slight changes to the proven formula. Most notable differences are the more dynamic field and random encounter changes.
FF Tactics might be the shining star of the genre but it's definitely not alone with a huge amount of games using this tactical element. After playing many I've picked my three favourites, if you've got different tastes to my own be sure to suggest your own alternatives in the comment section.