The multiple features...from being able to save donor information year over year, to adding donations and being able to package and put them online. The correspondence is also a great feature, to be able to invite, thank, and invoice folks.
I HATE that the auction catalog is only visible for a two week window. We work so hard as a committee to solicit donations - we want to be able to make them visible as soon as the items are received to give our donors some exposure and build excitement for our program. The excuse as to why it costs an additional fee are weak - the software is already housing the data and information.
Make sure your team is ready for it, I got considerable push-back from other volunteers on using this product.
As a parent volunteer, it solves the problem of handing off information year to year including donors. The software more importantly saves time to give our committee a one-stop-shop where we can all work in real time.