Comparison of FHI and CHI flat irons?

I have a CHI right now and of corse it works great, never had a problem with the CHI. BUT, i hear alot about these FHI flat irons. Now i know the big expensive ones are great, but one of those is only in my dreams. Im curious about a comparison of one of the cheaaper FHI flat irons you can find at target to a CHI. Either the FHI technique or the FHI platform. what are your guy's experience's with these two irons? which one is better? what are the Pros and Cons?