I installed RSFiles! and had it running in just a couple of minutes. The service was awesome. I ran into two problems, one a misunderstanding of how a feature worked on my part, and another problem with a feature that didn't work how it should. The service guys tackled them both as if they were working on their own problems and resolved them quickly.
The product is excellent and provides us with a secure solution to controlling files for download/upload with our membership. Setting up groups and corresponding folders and files that groups have access to is quick and secure.
This is the third product I have bought for RSJoomla and all of them perform as expected.