Vagrant Story is in my top three games of all time. It is an incredibly difficult game that requires a massive amount of patience and perseverance, but is really really worth all the time and effort you put into it. It's a beautiful game with an enchanting story and the best dialogue translation I have ever seen in a video game. Go out of your way to play it, and don't get discouraged by the difficulty.

Front Mission 3 is a game that would and could be great, but, in my eyes, overstays its welcome. It is an incredibly long game with what seems like hundreds of long strategy/tactics battles one after the other. I really got into it, but eventually it grew tiresome and I put it down. Front Mission 4 is the way to go, I think, if you're interested in the series. That game is fantastic, and has a perfect length.