CHI silk infusion?

I have always loved CHI straighteners - my stylist has one, and everytime I see her I swear that I will get one soon.  I have been using a solano, which isn't much less expensive than a CHI, but it simply does not compare.  For my birthday I got the CHI Ulta version (which simply means it's lime green, kind of cute I suppose) which has tourmaline.  So while I could not tell you which type of CHI is the best, I can promise you that from my experience, at least, it is hard to go wrong with any of them, and they certainly do seem to live up to all of the praise.