I love my Kolari conversion, in fact I married her!
Ok just kidding but really this company went beyond it means. Working on the weekend and easter sunday to deliver my 720nm conversion so I could take it on vacation with me.. The sensor was spotless and clean and focus to perfection. I have had instant response and aid from them in regards to post processing issues that I have encountered with certain lenses. I will consider them for all my conversions… did I mention they are also more affordable?