I had the most intense battles with my brother, even well into our 30s when we only met a few times a year.
It is sad that there never really was a successor that was as good. They could have lifted the 255 units limit, made the game more balanced, added a few more maps and units (but not too many), enhace the graphics (but keep it 2.5D, I do not want 3D in this kind of games) and make connectivity easier.
Cavedog released a fantasy game after that, which I wanted to like, but it was crap. And the Command & Conquer games were never for me. Tried them but never felt them.