Who makes the best "single player" RTS

I very rarely play multiplayer I save that for my mmo, I loved the single player aspect of Warcraft 3, what are other good solo RTS

Firefly Studios! Stronghold Crusader, Stronghold 2, Stronghold Crusader Extreme, Stronghold. All great RTSs. The Command and Conquer: Red Alertseries is great as well. Hellbent Games and WBIEm ade Lego Battles for the DS which very well done; made mostly for single player.

Creative Assembly's Total War series is great singleplayer.... But something tells me you're looking for something with an RPG blend.

Well, I'm not sure about the "best", but one of my favourites must be Stronghold games from FireFly Studios.
...as someone else said before me. ;)

Ensemble Studios

Sadly, they no longer exist :(

Rome Total War, since most computers now days can easily run that game. I would recommend Empires but it needs a pretty good comp. idk761

Theres a difference between Real Time Strategy and Turn Based Strategy. Dont compare the two.

I very rarely play multiplayer I save that for my mmo, I loved the single player aspect of Warcraft 3, what are other good solo RTS

Riptorn

Actually, I must add the good old Age of Empires II: The Age of Kings and The Conquerors Expansion!