Truly american? Have to be with Boeing's?
Jetblue, does really, they are very american, and they fly airbus'. NW
, Frontier, and other fly airbus'. They are still very american.
That being said though, with Virgin's typical red on their aircrafts, I think the B738 with winglets would be a nice choice. But I guess it is who gives the better deal, as is the case with many airlines. It is a business they are running not, a show and tell charity.
There is something special about planes....