What to get

I have been shooting a spring powered rifle for about 5 years now, and now I want to upgrade and get a pcp air rifle ,but not sure what the best gun out there is for the price.i would like to spend no more then $500 and I would be using it mostly for small game and some varmints.Is there any suggestions 
 
You would either need a special high pressure hand pump or a specialized compressor in one form or another. Typical shop compressors only fill to about 150psi. You need at least 3000psi and then you need a tank to hold the air. You can also just but the tank and have a local paintball or scuba shop fill it when need be for a few bucks.

Tanks
http://www.airhog.com/A3_About_CF_Tanks.html




https://www.airgunsofarizona.com/Compressor.html


http://www.pyramydair.com/article/Using_a_hand_pump_May_2006/30