Recs.
Updated
Plasma Desktop offers a familiar working environment with all the tools and features required to be productive immediately. Highly customizable, used in some of the largest Linux deployments in the world (Brazillian public school system, WETA Digital, the city of Münich, ..) and backed by a passionate global community that is committed to freedom in software and culture.
SpecsUpdate
Pros
Pro Comes with a suite of powerful applications
Plasma Desktop generally comes packaged with a full set of applications to get users started, including a file manager (Dolphin), advanced file manager and browser (Konqueror), image and document viewers (Gwenview, Okular), the Calligra office suite, CD and DVD authoring (K3b) and dozens more. The desktop can be installed and used without these applications, but they add significant value for many people.