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I would also suggest getting your other report and score, if you can afford to, Home Lenders will pull all three reports/scores to determine if you qualify and what the rate would be. So you do need to know both of the scores you can purchase here, TU and EQ, and I believe you can still get the report for Ex, though you won't be able to get the score. I think you can get it at Experian's website, though I'm not 100% sure on that.
It is possible that one of your reports will have stuff on it that's not on the other two, and Lenders will use the mid score. If you only pulled 1, it's possible that's your lowest, your mid, or your highest.