Gmat prep retakes-Versus compiled gmat prep Qbanks

This is directed towards experts and people who have used GMAT preps inside out.
This discussion should be useful for people devising a plan for the final week or so.


If one has already taken the GMATpreps 3-3 times. And more shots at the prep are no longer gonna be any real practice, is it better to solve questions from the compiled 'gmat prep question banks' and read the online solutions ?

Or is it better to just play through the GMAT prep a couple more times.

{Assuming that the other official sources have been promptly exhausted and errors revisited.}