I'm looking to pick up a .22 rifle for some plinking and small game hunting. I have a FX Dreamline that is currently being sent back to FX for repair, and I want to pick up another rifle to use now and to have as a backup. Both the Avenger and Challenger write-ups look very good. If you had to chose between them, which would you pick and why? Being able to adjust the power level is definitely and big plus. Any recommendations would be greatly appreciated.