I've flown in both rows 1 & 3. When I flew in row 1 I really didn't like the wall being so close to me during take off and landing as noted by bagold. I didn't notice any difference in space between rows 1 and 3 and when I flew in row 3 I wasn't disturbed by any noise from the galley.
If I fly again I'll be opting for row 3.