I like that we have been able to create our own custom reports using multiple fields in order for us, as well at customer's request! The interface could be more intuitive though; sometimes it was hard or impossible (or very slow)to get around certain parts by clicking directly instead with mouse clicks/etc.; however this would require an update from their side so maybe they're working actively towards fixing those issues? We also had some problems when exporting csv files because there were many blank spaces left behind between columns - but again these are things you can fix easily if asked about them beforehand ;-) There isn't anything i dislike really apart form minor inconveniences such has having too much information displayed upon screen etc., all solved pretty quickly once identified :).