500GB SSDs are now affordable (you can get them for about £120 or £130) and 1TB SSDs will be becoming more affordable soon. Once 1TB SSDs are available for about £100 that will be the end of the SSHD. Sure, a 1TB HDD currently costs about £50 but one day a 1TB SSD will cost that too. I'd happily pay £100 for a 1TB SSD for the extra speed benefit, especially given that my last 1TB SSHD cost about £80.