The original question is actually a pretty hard decision. Certainly the KWC for the blowback action and ability to field strip. On the downside, accuracy is not that good but good enough on soft drinks cans at 6 yards or so. The black finish on the KWC and white writing detracts too but can be removed.

The greyer finish on the non blowback Umarex is a little closer to the original, as are the markings on the pistol. The finish can be 'battle worn' through carefully applying a magic eraser to high spots in order to mimic years of use. Accuracy and power are higher too.

I ended up with both!

John