A friend over at Airgun Nation just imported a pallet of Cometa air rifles from Spain. These are rarely seen in the U.S. and have a very good reputation compared to say, Gamo or Norica. Cometa has made rifles for Diana/RWS.
This one, the Fenix 400 USC Star Premier, is just getting broken in at 12 yards, but I am pretty sure I will be shooting one-holers at the distance shortly. Pluses of this break-barrel/spring-piston rifle: It comes in under 7 pounds, compared to well over 9 for the pricier HW97s and AA TX200s. The moderator works well to quiet the shot cycle, especially on a rifle putting out about 16 foot-pounds. The trigger is very good for an under-$400 airgun. Keystoneairguns.com has several models to choose from and I expect to add one in.25 here shortly.