Over the past few years, we have always flown United to MCO. We normally fly from SYD through SFO. I really like their Dreamliner, but do remember the days that the tv screens were still overhead. I have found that United have cheaper prices, which helps me quite a lot. There has been the odd flight, where our party of 3 were split up, but as the kids are getting older and do more travelling that doesn't worry me that much anymore.