I know this is an older thread and I am late to the party, but I thought it might be interesting to revive since I am moving toward NO IRON shirts, but have a few that do require ironing, and IMO, starch.
I have a few Ike Behar, one Polo and an older Lands End that I do starch. While I could probably do without in a pinch for the Polo and the Lands End, the Behar's are really dreadful without starch. I've tried lightly starching them, but it does not seem to do the job well enough for a crisp, clean collar and cuff, not to mention the body of the shirt. The collars look awful without starch. I frequently do medium starch on these.
For No-Iron shirts, I have had really great luck with Eddie Bauer, although I do not care for the cut. Out of the dryer, these shirts look like they have had heavy starch.