Hello,
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Both are very well rated Colleges.
Just removing a single error from college will not decrease college ranking.Because both the college are highly standard.
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You can choose any of them,both of them can provide you good education as well as bright future.
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If you are forced to choose one then go for IIRM.Its was established before skhm so it has more experience regarding students career.
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There's no much difference i can tell you because both the Colleges are best in there respectives.
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Best of luck