Recommendations on Lingual braces in Illinois?

Hi, I want to get the new ibraces/ incognito lingual braces. Does anyone have any experience with any good orthodontist in Illinois? I'm guessing I need someone experienced because my teeth are very complicated.....very over crowded. If you know anything about it would help. I'm trying to price them too so if you add what yours cost would help me a lot. Thank you.