I haven't shot one of these, but I remember not liking the slide lock for some reason. At the time, I was trying to decide between the Sig Pro (2340) or the P229. I decided to go with the P229.
I did, however, shoot the P239 at a class at Sig Academy. I liked the gun rather well.
And that is why this site is good. You get honest reviews from people instead of the kool-aid drinkers on some other unnammed sites. I was looking at on in .40 and one in .357 and think I'll pass on both.
I'm watching a .40 and a .45. Waiting for responses on the .45 and if I don't get it, I'll get the .40. Both are pretty good deal but the .40 doesn't have all the gear (missing backstraps and only has one mag).