Hi everyone, I am looking MBP for my wife and got good offer on used MBP 13" late 2011. Do you think that it would worth to get late 2011 instead of mid 2012? In term of expandability and performance, is the difference with mid 2012 significant? Does late 2011 have bugs / common problem compared to 2012, or vice versa? I heard mid 2012 is the latest cMBP before apple replace it with rMBP. Thanks.