Hello,I've been shooting powderburners since young, but now I live somewhere with a big back yard and thought I should start shooting at home, rather than have to going up to the hills or the range. However, that means an air rifle. I want something accurate to 50 yards (RWS 54/56?), not too expensive when it comes to the whole package (RWS 54/56?), can shoot with a bipod (RWS 54/56?), can sit around for a long time without shooting it (RWS 54/56?- I don't want a project gun or something to fiddle with), can take out a possum (RWS 54/56 in .22?), AND not too hold sensitive (RWS 54/56?)...Part of me would like to get a PCP, but I don't want to spend too much money $1000 tops! and I concerned about long long term reliability and it sitting around for long periods of time not being shot...maybe even years...?And of course pat of me is tempted to buy something like a $200 gas ram, but think I might not be satisfied with accuracy (esp out to longer ranges), and hold sensitivityThanks for the advice and knowledge,SamK