Flying Biz Class: ET 575 ORD-ADD. I realize I wont know if it is a 788 (flat or angled seats) or 789 until 48 hours before but...I am traveling with my girlfriend. We would both like asile seats- does it matter which row we select - so long as they are the D and the Hs? ie some airline configs have seats better for couples and better for indiv. Does ET? Any other thoughts on flight ET 575? Thank you so much!