My husband and I both have Pocket Crusoes. Mine is the petite model like Sylvia's. I love my Bike Friday.
We purchased the hard-side and soft-side cases from Bike Friday. The soft side is very thin and doesn't really protect the bike; it's really more protection for your vehicle so you don't get grease on it, or to hide the bike from prying eyes. The hard-shell case is the one that offers protection. We have actually never flown with our bikes and until the past couple years also lived in a house with garage. We mostly got folding bikes just in case we did want to travel with them. Now that we're traveling more, we are glad we got them and the cases.
I got the 406 wheels and mountain gearing as our first main use of the bikes was for a self-supported and loaded tour, so I needed very low gears. I don't find that I lack on the high end, though. I got drop bars with bar-end shifters, and they work very well.
It's a little heavier since it's a steel bike but well made and has held up very well -- we got ours in 2004.
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow