We have an ergo and it was fabulous!! I bought a new lamaze too, just for the flight - it is the butterfly one and I got it for $10 at Big W - woohoo. The sleep thing is tough, DD didn't sleep just snoozed but I think the thing is to remember to try and wear them out prior to boarding the plane. OUr flights were at really odd times so DD was totally out of routine so pretty dazed/tired on the way back. Just keep a backup toy/trick up your sleeve in case the tears come out and you'll do great!!