I personally enjoyed the exit row better as I don't like fold-out tray tables. While I enjoy window seating, especially with the huge windows on the E190, one thing I have found is that window seating on the E190 can get very uncomfortable due to the climate control system which blows right down on you. I have been on a few flights which were an absolute roller-coaster with the temperature. Someone would complain they were too warm, the thermostat would then get pegged to the coldest setting and next thing you know you are freezing your nips off with cold air blowing right down on you. So, if I have the chance, I will take an exit row window seat but I bring something to put over me (a fleece or something) if the air gets too cold, but also wear a shirt where I can easily roll up my sleeves if the air blowing on me becomes like a hair dryer LOL
"If you do not learn from history, you are doomed to repeat it"