For a few years, having changed companies in between I've used several PMS system, however all were really bad and difficult to use.
It was simply way above anything else available and twice better than the close competitor. At the very beginning of my career in hospitality I started off with one of the earliest versions of Opera, which at that time was already way ahead from its pears, at a time when not many software companies cared much about hospitality applications. I used Oracle PMS during a span of more than 10 years.
