If you started a new PT database this should obviously help you to see where your playing level is at. You can objectively look and see what your results are. You could meet the goals to move up each time (eventually), but you may not be able to tell which level you are most successful at, if you simply keep moving up. Once you meet one of your goals to move up to next level, really look at your results. See what your bb/100 is etc. Then when you are about to move up again, look and see the differences. You may not realize that it took you 50% longer to reach the next level (or that you did it a little quicker). Also, be honest about how you have felt during play at each level. If you remember feeling really anxious when re-raising w/ AKs, then maybe you should move back down a level, and just try to crush it for all its worth.
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Man, I should take my own advise. I am not even using PT now, since I got a new computer.
GL