So this is my first post here on these forums, though I've been lurking around for a while.
I just took the GMAT this past Saturday after a couple months of studying with books (no classes). One major factor that I felt really contributed towards success on the test were the materials here at GMAT Club. Flashcards really helped in the couple of days prior to the test, just in terms of refreshing my memory and the iPad app was a huge, huge help.
So just wanted to say a big thanks and I look forward to repaying my dues here by helping anyone out who is currently on their GMAT journey!