The ease in which you can create your matrix with this program! It was very simple to use once I got over my fear that it would be too complicated compared other programs out there (like Excel). There are few things about QRM's user interface but these aren't deal breakers - they're just minor annoyances like having less rows than columns or not being able drag down from one row into another as easily/quickly when using multiple tabs vs only 1 tab at time etc.. Other then those small nitpicks everything works great!! We have been working together daily since we implemented our first version last year now so its hard sometimes remembering what features worked best back during initial implementation process haha! But overall everyone loves how much quicker & easier managing projects has become thanks mostly due qrm :).