SS drive is included in new ASUS .......
like this one for around $400.
My buddy bought one and couldn't be happier. It isn't exactly MacBook Air but close....... considering that it was made by total screw-ups and runs on greed driven operating system.
SS drives are quite a leap forward but keep in mind that these are first generation models and you will never catch up with either software or hardware.
It is a loose-loose situation for customers .....as always.
As to SACD as a format............they come and go - who knows what will they come up with next to screw us again. As far as I am concern, "Red Book" and LP is my format of choice and will be for quite some time.