I have been stuck up front on an A330 a few times. Its not wonderful, but it can be worse...The "jumpseat" is pretty uncomfortable but when the first person leaves to take thier break, you can sit in the IRO's seat. Thats not bad at all. I think the js on the airbus aircraft are a little better that boeing. The 757 seat isnt all that bad either. i have been stuck there on some transcon flights. The only bad thing is you are right on top of the captain. If you can js with a freight company, thats the way to go.