Differences: C-130 for FSX from Capt. Sim, Just Flight (direct) and Just Flight (amazon.com)

I want to purchase the C-130 X (the newest FSX version of the Captain Sim C-130) ... I really do!I've run into a confusion block: there are offerings from CS directly but they want quite a bit for the Pro Pack download (in excess of $80US ... I guess due to exchange rates?). There is also a Just Flight boxed offering that has FSX and FS9 versions included for $35US less than the CS offering. Have JF just repackaged the CS offering with a selection of models and liveries? Is it the CS "base pack" with selected liveries. Does this ship from the U.K.?Finally, there is a Just Flight offering through amazon (C-130 Hercules X Expansion for MS Flight Simulator X) for about $17US less than the JF offering. Is this an expansion aimed at previous C-130 FS-9 owners or is it the same as the one on the JF web page? Does this require any pre-installed C-130 package?I find this very confusing and it makes the ordering process difficult. Is there anyone here who have purchased any of these and can explain the differences?I did try searching here and many other places but nothing addressed differences that I could find.Thanks for any help you might be able to offer.Regards,Blaster (aka Larry)