I like that you can use this software in your own way, as it has many functions. It's easy to learn how to work with it, but if you are not familiar with programming language such as VBA or C# then maybe it will be difficult for you. This is my first time using an excel program so i don't know much about what other programs have, however, I do prefer this one because of its simplicity. The only thing I dislike is that sometimes when working with large data sets, it takes some times before all the information shows up in the worksheet. Also, there isn't any "back" button which makes me feel uncomfortable while working. So far everything looks good! In terms of ease of use and speed of execution, this excel program is great to use.