Hi Everyone, My beloved late 2006 iMac has suffered hard disc failure and i should really buy a new one. I have managed to get it booting from a USB external hard disc as a workaround but i'd really like to buy an iMac with and i7. I'm not sure if i should just go out and buy the i7 now or keep booting from the external hard disc until the next refresh? I've heard a few horror stories about the i7 iMacs but im also worried about the reliability of booting from an external drive over a period of time, especially considering how much usage it gets day and night e.g. media server, video encoding etc. Any advice would be appriecated, cheers!