I've used all the aforementioned methods, minus the vodka one. I reserve that for drinking when quilting isn't going right. Haha.
The two brands I've liked best are Faultless Premium spray starch , which I can find just about anywhere, and Niagara non-aerosol, which I haven't always been able to find easily.
I spray the back of the fabric. The fibers absorb the starch better. I then fold the fabric and sort of tap the starch into the fabric more. Then I set it aside and do the next piece the same way.
To make it easy, i only cut and starch the amount I need to work with, generally a quarter to half a yard. Starch them in the order I'm going to use them (roughly, if I know) so that by the time I've starched the last one, the first one is good and ready to be ironed. I then drape them over a quilt rack bar to keep them from re-wrinkling.