The first set isn't even a question; FF Tactics. I may love Pheonix Wright, but the replay value is slim to none. It's a "play it once and then never touch it until you get nostalgiac 5 years later" kind of game.

For the second set, I'll say now that I haven't played Tales of the Abyss, but my choice would be between that and FFVII. I'd say FFVII since I've played it and know it to be enjoyable, but again, I haven't played Abyss.