Thanks for all the responses. I thought I might be asking a provocative question and it appears I was. To answer several questions: our travels will be in May 2016. We will likely end up in economy, even though my wife swears she will never fly transoceanic in economy again. I may look to purchase with $ and upgrade with miles if I can do so. I have several 100K miles in both UA and DL, plus some with a credit card.