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I went for the 21.5 2.7GHz i5 with 16GB ram and the 1TB fusion drive. Had it a few days now and I think it's excellent in every way. Glad I resisted the temptation to beef up it's gaming capabilities, now I can have Photoshop open in no time, and a bunch of applications open with no slow down.

That decision was a year in the making... but made the right choice!
 
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