Many times on international flights (as was the case on the one we were on) only a couple of rows even have armrests that raise AT ALL, and those rows (for whatever dumb reason) are all the way against a back wall of a section. Emergency exit rows aren't an option for people my size on any flights - they will just reseat me as I'm not considered in good enough condition to be charged with helping people exit the plane should there be a disaster. Being this size, I already know/am aware of every tool at my disposal (including seatguru) to help me select the best possible seating arrangement for me, but the truth is there is no GOOD arrangement for a flight as long as the one to/from Sydney from the US.