[mosdef]

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Over in the land of SitNGos, 500 tourneys is considered a good benchmark for determining your skill at any particular level buyin. After 500, positive and negative variance is thought to have evened out sufficiently enough to give an accurate picture of what your ROI can be long term

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this isn't true. in the STT forum it is generally understood that you need a few THOUSAND SNGs before you can estimate your "real" ROI based on observed ROI. look for a post by eastbay about it.