There will always be at least two sides of every quilting debate and this is another one.
Sue Garman
never uses starch (and only occasionally will use a tiny dot of glue) and her quilts are fabulous.
http://suegarman.blogspot.com/
Diane Gaudynski makes her own starch like this because she is allergic to commercial fragrances:
Try my recipe for spray starch for all your pressing/piecing needs. Remember, you can adjust any of these amounts to suit your own needs, and also don't keep this for more than two weeks max. I make up a batch when I need it, then dump it out when I'm finished. It produces a super flat stable quilt: Dissolve half a teaspoon (or one teaspoon for a stiffer starch) of regular Argo cornstarch (in your cupboard probably) in a few tablespoons of cold water in a heat proof 2-cup measuring pitcher like Pyrex. Add boiling water to make one cup, stirring constantly. Then add cold water to the 2 cup line. Let cool and use in a pump spray bottle. Shake it every time you spray. You may have to dilute it a little if it is too thick or builds up white flakes. Lasts a week or so as there are no preservatives, no chemicals, no nothing that harms us or the environment, and it’s practically free, except for the spray bottle! Don't starch fabrics for storage as it will attract critters such as centipedes, and mice.
http://www.youtube.com/watch?v=IARx3CGQPCE
And Anita Grossman Soloman offers this advice:
http://www.marcusbrothers.com/features/quilting_experts/anita_grossman_solomon/
Personally, I prefer to mix my own spray starch with Sta-Flo brand starch 50/50 with water in a spray bottle. I generously spray my fabric on old beach towels (to absorb the excess) and let it air dry overnight. When it's dry it will easily iron perfectly flat with a steam iron, and I don't have to keep ironing with a hot dry iron until the fabric is dry.
Whether you prefer to use starch or not, I hope that you will try several techniques until you find what works best for you.