If anyone is considering the basic 21.5 with the 5400 HDD I would recommend that you upgrade to the fusion. It looks like it is the best solution re performance/price. I currently have an Ipad3, IP5, and a rMBP with a 256SSD. In a previous life, I put a Samsung 830 in my old MBP. The difference between a SSD and a spinning hard drive is just enormous. I think that once the iMac comes out, the reviews with the fusion will be unbelievably positive.