Difference amongst the keyboard / laptop and an arranger keyboard workstation?

Music keyboards on marimba plans: situation of A Rose for the Dead : The distinction in between the portable keyboard / arranger workstation keyboard Guitar Center on website, they have a section for Portable Arranger and the other section for keyboard workstations. What is the difference? What is absolutely everyone? And if I want a group to write and record music, the keyboard is greater to use? Also, if you advise some brands that would be? It need to be inexpensive, as the maximum

How to make a marimba