What is the best straightener i can get ?

okay , i had a chi but it broke , it worked great but it cost 150 dollars . i do NOT want to waste my money again , i want a straightener that works really well but is low in price . Ive been looking on eBay and there are a lot of nice ones . I am thinking about getting the Leonardo turbo silk or the cortex or something else . Please give me your opinions on the best hair straightener .