I've had an Air Arms Prosport, and although it's a beautiful gun, I found myself preferring my HW97. It just fit me better and had a nicer "feel". I was also very fond of a HW77 I had a number of years ago. The Diana 48/52 is indeed more powerful, but I found it very clunky and poor-handling, with a very harsh and unpleasant vibration/recoil. It also demands that you pay a great deal of attention to your grip on the rifle, and your technique needs to be perfect in order to get the best results. The HW guns are much easier to shoot. When it became time to trim the gun collection to manageable levels, the 97 is the one that I kept and will never sell.