Flexibility in setting up graphs and views that fit exactly your needs. Was looking for options to show stacked graphs with 6-10 channels of data, so needed multi-Y graphs. Dealing with 100's of thousands of rows of data is very fast, compared to conventional spreadsheets. The improvements for the sheet calculations now match the capabilities of MS Excel, giving more control of data.. used to have to calculate in Excel, then move the data to Origin. Being able to filter data, removing bad data either visually on the graphing page or through filtering on the data tables helped speed the output of the reports. The graph tools such as min/max/avg across user defined x-values enables to quickly point out relevant events. Several options to choose from for channel properties such as colors, patterns, thickness', etc.

Origin Pro provides an impressive set of options to analyze and visualize data. The interface is simple enough to enable beginners to import their data, analyze it with statistical analysis, perform basic data processing, and draw beautiful graphs. For example, I used the last version of Origin Pro to build networks without any backgroung in graph theory. Each update provides new options to draw a large set of graphs.

I like HeatMaps and Ternary diagrams in Origin