Airgun hunting question. Waltzer falcon hunter .22 or .25 caliber?

Hey again umm I was wondering which of the walther falcon hunter guns I should get. I was wondering I'd I should get the .22 caliber which has 1000 fps with standard .22 pellets or if I should get the .25 caliber which shoots 800 fps with standard .25 caliber pellets. I was confused about this because I have heard the .22 is better but Then I have heard the .25 is better because it has more knock down power. Please help me out on which of these two guns I should get. I want the choice based on power, and accuracy because I will be going hunting with the gun that is picked and I will he hunting anything up to a coon with a buddy of mine