Hi .. I own this late 2012 27" iMac since March, I ordered one with 1TB hard drive, however I'm planning to plant blade SSD as I refused to pay $150 Apple tax for a mere 120GB on Fusion Drive. I could do much better than that. I'm planning to get 240GB or 480GB one, however I don't know where to start. Which blade SSD should I get? Does it identical to the one in rMBP, or MBA? Or is it custom blade and connector for the iMac? Does iFixit sell it? Provide me the link if you don't mind. This blade SSD thing is confusing. Apple could just change one small nick to the connector and it would be incompatible like what happened on MBA. Any help is appreciated. Thank you.