Great

Great course. Especially if you want to achieve a very high score. in my case I needed to improve a bit to get to 550 minimum so the exercises were a bit too difficult at times but their brought great insight and prepared me to think quickly and understand the underlying assumptions on the exercises. Also, the staff was very quick to answer all of my questions and most of the times I was able to find my answer in the forums.
The verbal part is very detailed as well, although I personally felt I spent too much time watching the first units. I would recommend to first start doing the exercises and see what is your performance, because even though there are some very specific tricky things (e.g. subjunctive) you would probably gain more progress by focusing on sentence correction.