I beat TLA a few days ago by the way. Fucking epic. I beat all the optional bosses besides the one that Gelgarin was talking about, but I made a separate save file after I got the last djinni just so I could check him out. Beat the three headed dragon with little trouble, though he fell one or two of my characters, but nothing that some revival work from Isaac or Felix couldn't do. My party consisted of those two, Jenna, and Piers for most of the battle, though Garrett, Mia, and Sheeba made a couple of short appearances. Felix was cursed because I loaded him up with cursed equipment, but it never really effected the battle too much, just made a few turns rather frustrating.
All in all I liked the game, I'd give it a 9.5/10, but GS1 gets a 10/10 for me. I liked the linear structure of the map/storyline better, and I thought the story was a little more solid, though the story in TLA was quite good as well.