I have biracial (African American and White) hair that's really frizzy, kinky and curly so I can't ever style it to look good curly. I use a Solia iron that was about $80. If you're looking for a really good iron go to Folica.com they have hundreds for all different hair types with a ton of reviews.
my hair is curly verging in kinky. I had a revlon wet 2 straight but the "steam chambers" were always grabbing my hair. so I decided to upgrade to a solia. it's the one 1/4 inch. it's a higher end flat iron but well worth the money. I got mine from folica.com. they have a program where if you give them your old flat iron, they give you $40 off the iron you want as long as it's $79.99 and up. the one I wanted was on sale for that price already so I ended up paying about $39 for a iron that is registered at like $100. amazing bargain.