In reply to needvert:
Very comfortable.
For small people (i.e <70kg) who are happy to sleep on their backs and mainly good weather I'd go for a double from Fish Products as it will be much lighter and easier to put up. Assuming you are off to Yosemite, Fish will post it to the Yosemite post office.
For big people or if you plan to have to sit out storms with lots of cooking and gear then something bigger. (Or ask Andy K.)