In the past, SSDs were expensive per GB so most people used an Optibay so HDDs could be used for storage and a small capacity SSD could be used to run the OS and apps. At this point, you could get a 256 GB SSD for a good price, enough for most people to put OS, apps, and a decent chunk of storage. You could use dropbox or an external HDD for remnant storage if you need it (I don't), and you can keep your optical bay. Thoughts?