Hello, I need some help from you air rifle gurus. I have a bit of a squirrel problem, but live in a densely residential area. I need something very quiet, but yet very effective. I have a budget of around $200 on this. I've only looked at the Gamo Whisper Fusion so far. What else is out there? PS- a scope isn't vey important to me. All of my shots will be within 25 yards and open sights will do just fine. Thanks in advance!