I love my 239. Great trigger, really accurate, not that difficult to shoot really well. It makes a really great companion to a 226. I needed a very low profile option for a carry gun at one point so I spent an entire summer and fall carrying one in a Smart Carry. It really worked very well in that situation even though it was a little heavy. The TDA made me feel very safe about carrying the pistol that way. I really enjoy shooting it and I will never get rid of it.
The only problem with the 239 is it is almost exactly the same size as a Glock 19. I don't own a Px4 compact but I would suspect that the 239 and it are also pretty close in size. I think it could be argued that a P30sk would fit in every role that a 239 would, have all of the benefits of the 239, and none of the minuses.