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The 5400rpm at Best Buy was awful. It gave spinning beach balls every time I clicked on anything.

Yeah, the base 21.5" that I got at BB (only because of the extended holiday return policy) only got 72MB write/75.9MB read. Sucky, I can't wait to return this and go all out on a 27" 3.4 with a 3TB Fusion once they're not as constrained.
 
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