I don't care for the smell of bottled starches. That's why I bought my first gallon of Sta-flo. I mix it 1:1 with water and add a few drops of lavender oil. Now I starch EVERYTHING!
Especially pre-washed fabrics, but even new off-the-bolt fabric gets starched! I'm a firm believer that the starch makes the fabric behave better for both cutting and piecing. Once my top is pieced....it gets another pressing with starch. To me, that makes quilting on my DSM easier, too.