I am slightly irritated at comments I have seen that say 'don't buy the slightly more expensive Edition, just download the units as a mod after the game is out'.

Not buying Special Forces I can understand. Not buying it because you intend to get all the content for free is an entirely different story.

If you get extra content you should pay for it. Even if you think it is too expensive you can take a stand by not purchasing it, rather than try and get it for free.

Just my two cents. (Although since I'm English I use pennies, not cents :P)