I'm a springer kind of guy. But considering the learning curve needed to shoot springers, would maybe a QB78 using 12 gram co2 cartridges be better for a new guy who just needs pest control?
One other thing. I only had a few coons around here but a bunch of possums and stray and/or neighbors cats. I insisted, well asked and explained patiently, to my wife and step daughter to stop feeding their cats outside and only inside and the other critters would stop coming around. It worked.