If you are looking at vendor statistics and looking at getting a basic list of top vendors where you spend money then you could have a look at two reports Top 100 vendors and Top vendors by YTD purchases. They have slightly different filter options that you can run but the main thing to keep in mind is where the data is coming from. With the Top 100 vendor report the data comes from the current transaction database where as the Top vendors by YTD purchase is coming from the cubes.
Here is a quick overview.
AX2012 R3 CU9.