I like how easy it is to use, there's no need for any training or anything of that sort! It really does help me keep track of my time as well as my projects which makes things easier when billing clients.
The only thing i dislike about terminal one is that sometimes you have to wait a little bit before getting paid so make sure your billings are accurate! As far as benefits go, its pretty great! You can easily access this from anywhere with an internet connection. Also, they give you free phone calls if needed. Nothing at all really! Its very helpful and saves lots of paper work.