I'm growing corn for the first time also. I chose "Early Sunglow" because it is an old hybrid, not a super sweet kind. My crop failed last year, so I"m excited to see how much my stalks grow every day this year!
My thought behind the variety I picked was that I don't like how sweet these new hybrids make the corn! They don't taste like corn anymore. For next year, I might try an heirloom black type.