I saw that Dr. Lee offers 12.5 and 15% minoxidil. I think both products are relatively new so people may not have good indications if they really work better than 5%, but I was just wondering that if >5% was really better, wouldn't Rogaine have come out with the product since they have been selling minoxidil for 18 years now (and probably testing minoxidil for at least a few more)?