why make it so thin though. Now I love apple as you can probably tell by my signature. I can understand a laptop being made thinner, but the concept to a ultra thin iMac? It saves no space at all, its not upgradable really anymore now its more like an oversized iPad and Apple hope you just throw it away if the hard drive fails or whatever in a couple of years.
You will always make compromises on an all in one computer. Whether its a non upgradeable mobile video card, size/space limitations, limited upgradeability. You seem to be choosing the wrong type of computer. If you are so worried about hard drive speed why choose a mechanical hard drive over an SSD?