Xante ScreenWriter 4 or 5

Is anyone here working with either a Xante ScreenWriter 4 or 5?
Would love to get some feedback on how good they are these days. Back in London we used to have a ScreenWriter 2. It was a good unit but sometimes you had problems lining up all films 100%.
I assume though that Xante might have worked hard on this issue.

Location: 
United States