Hello, I just upgraded from my 2010 15'' i5 2.53 8gb ram 500gb HD @7200 hi res antiglare to a 2011 15'' 2.0 8 gb ram 500 gb hd 5400. And wow right away I noticed the start up was faster things are a lot smoother. I were questioning a upgrade or not upgrade. I was lucky and paid 1300 for mine with apple care til 2014! Any other questions or anything let me know!