dolcevita

One thing to keep in mind when sitting upfront in an ERJ (usually seats 1A-3A) is that the temperature there is sometimes significantly cooler than the rest of the aircraft.

I've been flying ERJs exclusively for the last 2 years (lucky me) and I avoid 1A-3A whenever possible because of this. I've discussed this with the FAs, who uniformly agree that it's much cooler upfront.

12B is a nice seat, though as others pointed out 12A is pretty good as well. You did well to change seats.