I recommend Kaplan

I am really happy I took this course and I highly recommend it. I saw a dramatic increase in all of my scores and I think it's because of the amount of homework required for the class. if you do the homework there is no way that you won't improve. I also think the Kaplan practice tests are much harder than the actual GRE so I felt so prepared and really confident when I was taking my real GRE. I was honestly really surprised at how identical the practice tests look and function like the real GRE. Also Kaplan lets you take your final practice test at an actual testing center and have that experience and I'm really glad I took advantage of it. I got to know what it was like to get metal detected and everything so I wasn't shocked when I took the real one. I also didn't think my instructor was going to be so hands on, but she emailed me regularly and analyzed my tests to tell me what I had to work on.