I use a Printrbot Metal Simple from the build-it-yourself kit, and have been using Cura 15.04.4 for a long time. I like the Pronterface interaction in which I can start and stop printing, measure and set the extruder temperature, and move the print head around. Most of my prints are need some hand-holding, which is usually tinkering with the individual settings until I get satisfactory prints. I do a fair amount of clean-up of my print bed and extruder head on failed prints.
I eagerly downloaded Cura 2.3 Beta, and was very happy to see support for Printrbot Simple printers. At the same time, I noticed that the Pronterface option is no longer available. So it looked like I could either explore the new features in Cura 2.3 Beta, or keep the Pronterface for my own troubleshooting cycles, but not both.
However, there might be a best-of-both-worlds alternative. I'm trying my first print right now which I sliced with Cura 2.3, then saved as a .gcode file, which I then opened in Cura 15.04.4, and am printing through the Pronterface.