Heard a lot of buzz about GMAXonline. And yes, I do see quite a few links out there but nothing like Veritas
or ManhattanGMAT or Knewton. Considering its for $400, its the cheapest option for online self study. So for the folks who have tried these online courses, from your experience, is it worth spending $700 on Knewton, $600 on Manhattan or $400 on GMAX online. The goal is to get about 700+ and hence want to make sure I don't leave any stones unturned, but also do not want to spend extra money if the quality of course is similar.