I am so happy someone posted about this! I was doing my researched and wanted to get it but then i noticed it wasn't cg friendly.
U should try one from curlymart.com like the AG hair cosmetics set it straight which doesn't have any "cones" and such.
But, if you want one that isn't cg friendly try pantene curly soemthing its a small cylinder like pink bottle to straighten hair, it's amazing! Also the Redken Smooth Glide serum is great about 15bucks or so.