There all about the same really - pick Window or Aisle as to your preference.

My impression was that Row 2 has more legroom as there is no bulkhead - plus you can store stuff in the seatback in front of you, unlike those useless things on the wall. However someone can recline a bit into your space. Being a Row 1 type myself (for that reason) I have never sat in Row 2 so am not sure if the recline is limited as compared to Row 1 - maybe someone can confirm. But I doubt it would be noticeable.