I didn't read any of the other replies so it might have already been said but............. don't sell the sig because after 10 years.. it becomes you.. you know it well.. and thats your buddy. Wait some time, save up, and just buy the mp. Its ALMOST like selling your first handgun after that many years. Plus, being the owner of 3 polymer guns, keep atleast one all metal gun. You don't have to use it for carry anymore. It is part of your collection and a nice range gun.... BUT, IF YOU DECIDE TO SELL!, GIVE ME A PM BECAUSE MY NEXT ONE TO GET IS A P229..lol