My P07 is the older DUTY model. Great gun. It is the reason I've bought more P0X guns.
I don't care about the front serrations. It's a bad idea to grab the front of the slide and push it to the rear. I know a guy with two scars on his left forearm from a .40 hollow point that when in the palm of his hand and left up near the elbow. I tried to tell him for years not to work the slide that way but he was smarter than me.
The plastic sights were an issue. Normal wear and tear starts to make them kind of fuzzy around the edges. I replaced mine with some night sights from CZ. Not hard at all to replace. Worth it, too. I can see that pistol lying on the floor by the bed in the darkness from the glow of the sights.
The curved trigger is not an issue for me. The new trigger, on my .40 S&W P09 actually pinches my trigger finger pretty bad so I replaced it with an older style DUTY trigger and it's fine now.
I know the frame, around the front of the trigger guard is different. It was never an issue for the two or three holsters I use. One, from CZ, is P07 DUTY specific and the newer P07s and P09s will not fit in that holster. The concealment holster doesn't mind which P07 goes in it, DUTY or the newer model.
The interchangeable back strap on the newer guns is a nice idea, but the old P07 fits my hand just fine as is.
When the prices are the same, or nearly so, you might as well get the newer version. They changed it for a reason, maybe good, maybe not, but it was changed and the older version is no longer made.
Oh, the night sights, on sale, were just under $100. Keep that in mind if buying an older version. At some point you may want to upgrade the sights. CZ puts them on sale sometimes, so keep an eye on their web pages. You can get similar sights (maybe the same ones???) from CZ USA, CZ Custom or Cajun Gun Works.
