I like that it works well for big datasets (millions/billons)I dislike having too many features enabled by defaultThe UI is outdated compared even simple SAS softwareIt lacks support from other platforms than WindowsWhat's so great about easyfit? That its free!That there are lots more libraries out theirSAS has been around longerAnd they're just not updating anymoreEasyFIT seems stuck between old school techology & new style technologyBut if someone made them use HTML5 would save quite alot more money.