Gamo air rifles question?

I was looking at the gamo varmint hunter and gamo whisper. Here are the things I need the gun for so tell me which one is better, Quite, easy to sight, powerful enough to kill a coon or opossum, .177 cal, stock features. I loved the whispers sights because they were bright and easy to see, but the varmint hunter seemed to have better features on the scope, but i figured I could just add a laser and light to the whisper scope and it would be fine. I didnt like the lack of iron sights on the varmint hunter, it just had the scope I believe. But anyways, thanks for looking.