If your transcon is in p.s. service - SFO or LAX to JFK, it's a great bus. class seat - many feet of legroom! If you're on a "regular mainline" 757, it's a bulkhead coach seat right next to where the main coach psgr. door opens. I generally prefer exit rows 15 or 16 on a mainline 757 as they offer extra exit legroom and aren't bulkhead, but preferences do vary. Check out seatguru.com for a fuller explanation.