Just used the trial version. Never used SD before but in about 3 hours from download I produced a decision tree to support a meeting I had the next day to explain something complex. My only 'intuitive' challenge ( bearing in mind I didn't read any of the instructions) was moving chunks of drawing around together - I'm sure it can do it... Thanks to Paul for his comments ( I was a bit disturbed by the blog grumbles) - a measured response, enough for me to buy it, even if the trial's a bit short! Cheers.