I heard that the 8820 series is completely compatible with all version of the BlackBerry Enterprise . It has high speed Internet access on their Wi-Fi compatible networks.

yeah mine wasnt compatable on signapore air either

I don't know about the sites you posted, but my blackbery (8870) was not compatible with Singapore Airlines wifi (before it was discontinued last year). My blackberry doesn't use wifi for data transfer.

For example, gogoinflight, or skything dot com? (you have to enter urls yourself because I am a newbie)

Thinking of switching from my wifi enabled Palm and OS.