Kodak 7590

I’m seriously considering the purchase of an intermediate level camera and the Kodak 7590 seems an interesting bet. Can anyone coment on whether this is an interesting option for fotographing flying jet aircraft? Also what is the diference between the DX7590 and the US$50,00 cheaper z7590? they seem to be identical except for the included camera dock of the DX model… I do appreciate your knowledgeable imput 😉

Regards,

Hammer