I noticed a thread asking for opinions on LX C vs UA F earlier. I figure this sort of question may be common, so it may be worth starting a thread. In general, how does UA F (international) compare with other *A partners (or other partners) who don't have F, but have a lie-flat C? In particular, I'm trying to pick a FRA-NYC return, but the only F availability is on UA via BRU. However, since I'll likely be connecting anyway (unless I take the LH C) there's also VS C available via LHR or OS C from VIE. I figure the on-the-ground at LHR or VIE at the respective hubs will probably be better than flying UA F out of BRU. Can anyone compare either of those with UA F? And I welcome comparisons with any other lie-flat C seats on *A or UA/CO partners in case others are wondering.