AF3+2 > Af3+1 > Eradico Mitts. I don't know why it's such a hard decision.
AF3+2 destroy eradico, so that's not even a contest...
As for AF3+1 vs. Eradico:
You get +5 int and magic crit rate +3% while losing 1 MAB.
I'd say *** eradico and use the +1s...they both have the increases crit damage, so i'm going to assume its the same.
And @pewpew. That comment you made doesn't belong. He asked blms, not people who make stupid statements and don't even back them up. Why in god's name would you only wear the +2 for the set bonus proc? The +2 have WAY better stats than eradico...unless they have some hidden effect i'm not aware of.