Only played Odyssey & Liberation. Liberation is more enjoyable but Odyssey is much longer --- Currently Playing: PlayStation All-Stars(PSV), Naruto UNSG(PS3), inFAMOUS(PS3), Persona 4 The Golden(PSV), Growlanser WoT(PSP) & Persona 4 Arena (PS3)
Odyssey is incredibly shallow, and even more tedious than most games of its type.
It probably will last you the longest, but that's only because the drop rates on cards are horrendous. So it's entirely possible that very little of your time with the game will be considered "fun."
Also, it's $40, which I think is ridiculously overpriced. You could get both of the Disgaea games for less than that, and they're infinitely better. You could also get MHFU for a portion of the price.
I haven't played the other two games, but I hear lots of good things about EDF. --- For those players who don't speak Australian, we have provided an English translation of the previous scene. Do you want to replay the scene?
Odyssey is a bit shallow, but looks and feels nice. Just needed more meaning to the gameplay.
Liberation I've heard is short, but if you want a decent and portable AC game, go for that.
I've played EDF Insect Armageddon which is newer than the 2017 edition of EDF so it has more budget, but IA lacks a few things 2017 has. EDF in general is just pure co-op fun of blowing up insects really and getting loot, with a lot of challenge around the end on harder difficulties.
Should be noted that all 3 of these games are repetitive in their own nature. --- http://www.yourgamercards.net/trophy/a/Xelorx.png You don't want to be famous for your trophies. Hakoom is an example of this.