I'm currently in the market for a new airgun. For the most part I have decided on the hw97k in .20 cal. Here's the dilema, the .177 & .22 are $100 cheaper than the .20 cal! (airguns of arizona) I was leaning toward the .20 for the compromise of velocity and wind resistance. So is the .20 cal worth it? *note: There is no hunting in my future and the primary use is paper punching/silouette at 50+ yards in the overly strong Florida wind.Thanks.