Okay, I bought the game.
Now that is a landmark event in itself, because it is the first PC game I have ever bought. I've bought many C64, Amiga, PS2 and handheld games, but this is my first PC game. Wooohooo!
Well, I am enjoying it immensely. The Croatia mission is very difficult, but I have finished it and managed to make it to Germany. This is where the third faction appears.
It has been well worth it (but I am biased because I am a Dune and Warcraft fan).
I see there is a Kane edition of CnC3 too, but it has mainly cosmetic extras and is £10 more.
By the way, the Ion Cannon kicks arse!