I would suggest seeing if you like the mil dots first. If you dont allready own a mil dot scope i would read up on how to use them ect before shelling out $140 to get your allready high end scope " upgraded ".
Keep this in mind : Getting a scope " upgraded " for $140 is alot cheaper than buying a whole new scope.
Personally i dont use mil dots, i adjust my zero to hit where i want it to. To each there own.