I probably spent 95% of my time with Scepter/Sword (Illusion primarily). Most of the time was fighting single/dispersed enemies in somewhat mobile fights, so having piles of single target damage and multiple blocks was a lot better than the other options.
That being said, Scepter/Sword isn’t particularly useful if you’ve got allies along – the blocks are useless if you’re not being attacked, Torment is weak in a static fight and the lack of (useable) AE makes the Great Sword a decent choice for such situations.