I have roughly 2 months to prepare for the GRE and have a decent baseline. I don't want to spend too much money but am thinking of buying either the GRE Total Access pack with the GRE Mentor Prep Course or Gregmat 2 month plan.

Any suggestions on which might be better?

I was going to buy the official GRE quant and verbal books, the 3 Powerprep Plus practice tests and the Score It Now anyway, which amounts to roughly $200, so I thought I might as well buy the GRE Total Access pack which is $250. Then I came across the Gregmat plans which seem to be more cost effective with similar stuff.

Which is better? It seems like a waste to buy the official stuff and Gregmat at the same time, given I have only two months and might not even cover everything in both.