I switched from a metal front rest when a rifle jumped off of it from recoil and hit it's stock on a sharp corner. It's a Sinclair. Any metal front rest would damage a rifle that hit it.
Now I use a large soft bag as shown covered with a soft towel and a leather rear.
My experience was exactly the same.
I'm not a fan of any of the one piece the fore-and-aft rest setups, but some favor them.
My absolute last choice would be a one piece light plastic rest.
Especially if cost is a concern, the traditional shot bag filled with sand works pretty darned well, at the expense of weight and convenience. For a softer rest the bag can be filled with beans, kitty litter, or whatever. Combined with a commercial bunny ear rear bag, you would be well set for sighting in, i.e. anything but serious benchrest work, at minimal cost, just like in the photo.
Paul