The 3rd one is the best. But I really dislike the colors used in the background and the c4d effects to the left really don't go with the picture, nor do they look really good like that at all. If you are going to give your stock a ghosting effect, try not to have so much chaos with effects going on behind it, your focal point is off pretty bad from it. Remove some of the effects to the left and give it flow. The ghosting effect and the lighting to the right are great. If still having problems with seeing the stock, you may want to raise the opacity/transparency just a tad bit more.