I went with the F'lite 30. I'm only going to use it for Airline travel. Will get a soft case for Buses/ Trains/ Car.
Bike Friday said they've never heard of any sizing issues with the 30, even though its like 63.5 total inches (regulations are 62).
However, they did warn that Europe is enforcing a strict 20 Kilo (44 lb) weight limit, depending on the carrier.