I have shipped 2 jets via Greyhound and both arrived completely undamaged. I built a couple of pretty stout crates though too. They have a 150 pound limit as well as size restrictions so check their website.

[link]http://www.shipgreyhound.com/[/link]

It is not exactly super cheap but cheaper than other shippers such as Forward Air and what not. I think I paid about $150-$180 to ship my F-16 and F-15, separately of course.