Guys,
Just took the GMAT today, and I would like to personally thank each and every one of you for the posts and help you gave me through the process, even if it was indirect.

I scored
740 overall (Q:50 and V:40) and I am officially done with the GMAT.
Throughout my preparation process, it was quite difficult for me to have a clear picture in my head over what was my current level. Every CAT vendor has a different style of test, with different scoring and at times it frustrated me quite a bit. My Scoring was:
MGMATCAT 1: 690 - Q:46 V:38
CAT 2: 620 - Q:39 V:36
CAT 3: 640 - Q:43 V:35
CAT 4: 680 - Q:46 V:37
CAT 5: 680 - Q:47 V:35KaplanCAT 1: 760 - Q:51 V:44
CAT 2: 720 - Q:50 V:41
CAT 3: 730 - Q:51 V:40
CAT 4: 740 - Q:51 V:42GMATPrep (Couldn't find quant and verbal results)CAT 1: 760
CAT 3: 750
CAT 4: 770Clearly, each one of those is quite different from the actual test.
GMATPrep is a bit easier in both quant and verbal that the real GMAT,
Kaplan has a similar quant than the actual test, but is quite harder than the actual verbal.
MGMAT for me is pointless in terms of scoring. People who have strong results in
MGMAT normally take the exam untimed. Quantiative of the
MGMAT is much, much harder than the real deal. It is a strong preparation tool, but do not base yoursel of that.
Hope this helps and I am completely open to help all of you in any way you want.