What are your experiences with these tips? Is there any major difference between the different tips (other than hardness of course)? They're all made by Tiger and they all have similar descriptions so I was wondering if there really is any difference or if it's just a marketing gimmick.
http://www.tigerproducts.com/store/home.php?cat=108
http://www.tigerproducts.com/store/home.php?cat=108