Well, 13-2 is fun imo.. and if you have the money to waste the DLC is all on sale until the 1st.
FF3 also came out on PSP the 25th :x (DS version graphics)
I'm kind of torn. The reboot for FF4 on the PSP including The After Years is fantastic because it essentially polished and made everything the retro version had better, but without directly altering the core of the game. However, in terms of overall presentation, many acclaim over the DS version.
Wondering if getting a PSP or Vita would be worthwhile; as it would essentially be a little playstation retro box for me for the most part. I have yet to see any major worthwhile titles or features exclusive to the PSP/Vita.