I have the endura with a stainless steel handle and a plain edge. I´m completely satisfied with it. It came razor sharp and holds an edge very well. The blade opens and folds smoothly and it locks reliably.
I chose the smooth edge because it´s better for most cutting tasks and it´s easier to sharpen. If you need it for cutting ropes or seat belts the serrated edge might be better. I wouldn´t recommend the half serrated blade. It´s a compromise and with such a short blade you will have the disadvantages of both edge designs.