I've got to get back to BOS from LIS March 2012. I'm about to book 2 x 50k for J seats using CO awards. F would be nice but I don't want to burn the miles if J is adequate. (It will be Lufthansa A340-600 over the water). I'm not missing anything, am I? Using a one-way CO award for the LH is the way to go, correct? - Posted this at Continental as well - Thx.