After trying the the exit row a couple times, I stay away from it now.

The window seats are cold, and there is a VERY high likelyhood of the middle seat being occupied. I would rather be a couple rows forward with the middle seat open. On one flight I was in 15F and we rolled away from the gate with middle open, but a burely guy from E- was relocated by the FA to 15E. I was not thrilled (FA made the move, c'est la vie) but the lady in 15D was REALLY pissed off.

I also noticed the seats 14 & 15 recline different amounts. The aisle reclines the most, less in the middle and the least at the window. 15C and 15D would be the best if you really really wanted the extra leg room.