Hi Vitali:

You are a natural! Congrats on those great initial test scores.

Your GMATPrep score is an excellent representation of what you would actually score on the real GMAT. GMATPrep simulates the real GMAT exactly, as well as uses actual (but now retired) GMAT test questions. If you were to take the test tomorrow, I would confidently assume that you could score a 710, + or - 30 points.

Your GMATTER performance is impressive as well--I know that this software draws its questions from the Official Guide book, which features actual, retired GMAT questions as well. An 84/100 SC questions is terrific--far better than what I performed when I first started.

I can't speak to mba-center.com because I am not familiar with this service.

Needless to say, you are in a very strong position to begin studying. With the right preparation, you are within reach of scoring a high-700 GMAT.

With regard to preparing for the AWA, I have two suggestions. First, download the "800Score Guide for aceing AWAs," located in the AWA section of this forum. This guide provides a good overview of what this section is all about, as well as examples of high-scoring AWA essays. Second, be sure to do a fair bit of timed practice essays. After reading a few '5' and '6' score essays, you will get a sense of what it takes to do well on this section. Download the Official List of AWA Topics, which can be found in the AWA section of this forum or at MBA.com. Do about a dozen of these practice tests; when you take each test, be mindful about allocating time for brainstorming, outlining, writing, and proofreading.

Best of luck, Vitali. Please use this forum and this community for all your GMAT queries, and let us know how it goes.