I ended up with the Crateworks box . . . it's an impressive carton and packing the bike was very straightforward. I just got home from shipping it. I first went to UPS who rang it up at a whopping $114! When I protested saying that I'd checked the dimensions and weight online the guy said, "yea, that's wrong all the time". So maybe they should address that on the website? Jerks.
Anyway, I ran over to the nearest Fed Ex facility and it's going UPS Ground, should be there in 2 days (way faster than sucky UPS ground) and only cost $26. It's declared value is $2,500 so I'm not really sure what the above post referring to a $500 limit was all about - may be specific to electronics. The crateworks box is a sturdy package though so I'm not really worried.