I'm on the hunt for a used Sig. I haven't decided on either a 220 or 229 (in .40) but already have a 228 and 226, both in 9mm. A couple of local shops have Sig certified pre owned 229s in .40 for a seemingly great price, but I'm a little leary of getting a gun with a really high round count since they're former agency guns. Does anyone have any experience with these certified guns and their durability? And I know 220 and 229 is probably pretty subjective...but does anyone have any thoughts of comparisons of the two? I'm hoping to make it to the range this weekend to rent both to try them out myself.