Korean Air is cheap but some transit time gap is up to 12 hours.. Try Eva Air http://www.evaair.com reasonable cost, short transit time and they have bigger plane (US to Taipei), Taipei to PP is serviced by their subsidary using MD90... Food is good, you can select your seat preference if you booked your ticket in advance, my ticket cost $1,735 for Nov 08 Boston to PP 28 hours 2 hours transit in SF and 3 Hours in Taipei...Good luck booking