Originally Posted by Facevalue
I fly many RJ’s annually, and 12A is my favorite seat. 12B is the best seat on the plane (we’re talking 145’s of course) as long as there is no one in 12C. When 12A is not available, I will take a cramped seat alone in the A aisle over a shared seat in 12B. Your personal tastes and physical stature will help determine your preference.
I agree with this too. If you are expecting turbulance, I've found the ride a bit smoother forward of the wing though. I know others here have mentioned they don't like 12A because of the short arm rest and the window being slightly forward than on the regular seats. If leg room is what you want, then row 12 has more than enough.