We recently purchased a Rockwood MiniLite 2503S. Have taken it out a couple times and absolutely love it. However, this is our first travel trailer so we don't have comparisons. The murphy bed was one of the selling points as it allowed for a couch, more room in the bathroom, and second entry door on the other end.
The slight inconvenience of putting the bed up and down is more than offset by having more room in the trailer during the day.