hi there, no dought this topic is going to get alot of different answers... well... it does depend on how much you have to spend to start with , also when you go down the pre charged route you have to think how you will re-fill your rifle (buddy bottle, stirrup pump, or just down the diving centre)
money no object i might be tempted to go daystate air wolf mct, theoben rapid mkII or the ripley elite (im sure the guys on here will give pros and cons for each)
middle range is the BSA R10 (considering myself) air arms s510 (there a link on here showing a vid of pelet on pellet accura