What hair straightener do you recommend for me?

my hair is medium length, and it is dried out from all the dying ive done to it and all the times i havent been using heat protectant (But i do use it now!) I have a chi right now, i want a hair straightener that will get it pin straight, with no puff whatsoever, shiny, and smooth to the touch. my chi makes my hair staticky, and snags my hair. also it will kind of curl 2 hours later.also if you can recommend any shampoos or conditoners, products & heat protectants, that'd be great