But roundtrips from Europe to the US are a steal! Many dates have been $600-700rt. So use miles for a one way to get over there then do a series of roundtrips. MUC and FRA have been particularly good.

Also SWU availability can be surprising sometimes. I found C5 on FCO-DFW in early September, booked all 5 for myself and family -- and that's on a 20J 787. Definitely check EF.