Easy file upload, customizable appearance of download links in the frontend. No unnecessary features, slim and does what it's supposed to do
Ease of use
Easy to configure and implement.
Very fast and friendly support, answered e-mails far beyond normal office hours.
Configuration is easy to understand (so extensive documentation isn't necessary), documentation covers most use cases and gives examples.
Value for money
Good. Not the best value for money as from my point of view it's a rather "small" extension, but it does what I expect and support ist great