iMIS 15 makes me cry
Our association has been running iMIS for over a decade. I was not here for the implementation phase, but I have used the system for three years now. Bottom line: if you feel drawn to iMIS, go with iMIS 20; leave the iMIS 15 dinosaur be.
Besides the fact that it is desktop-run and not cloud-based, the interface is clunky with a distinct Windows 98 aesthetic. Customization is possible through a la carte choices of modules, but these modules--to fit our purposes--are held together with the technological equivalents of paperclips and chewing gum. Tech support has been spotty, and while our vendor has been quick to help when we're paying them for consulting services, when I ask for training videos, communication channels fall eerily silent.
Our association is considering an upgrade to iMIS 20, as upgrades are no longer supported for iMIS 15. But we're definitely considering other solutions, as well.