.22 Daystate Regal XL. It's minute of chipmunk head to 100 yards with the same accuracy with a variety of pellets, 40 full shots, cheap CPHs shoot decent enough out to 40 yards, not bad to hand pump, nice walnut stock, and most of all, It's a dedicated lefthand rifle.
Quoting myself. Now I have an Atomic XR, of the three? The Atomic...Between my Compatto and Bantam HR? I would choose the Compatto. Don't need an SCBA or compressor for it and it gets twenty shots good to 100 yards or 30 shots good to 50 yards.
P.S. hard choice