Princeton review is also available, but only in selected areas. Honestly, I really don't think its worth spending 1000 bucks if you are motivated. But if you think the best way to be motivated is to spend money , then by all means go for it.
However, I took kaplan, I would give it 5/10 rating. I have all the books from Kaplan, including notes where I practically copied all of their subject test material so if you want it contact me in 2 weeks and maybe I could save you some money.
DesiDentist