We used SW Cashmere for the interior areas of our house other than bath and kitchen and it was an absolutely lovely paint to work with. Went on smooth, not too thick, not to thin, dried fast but not too fast. It was the just easiest paint to apply out of all the various brands and lines I've used over the years. The rooms all turned out great. No corn rows from the roller, even texture and sheen on the finish. We used the Low Lustre which is basically eggshell finish.
And yeah, buy paint at the SW store when they are having a big sale. I've only used the SW paint from Lowes once, but it was not nearly the same stuff.