I shoot two guns from that Kral family...the Puncher Breaker and the Knight. Both are very comfortable shooting lefty. I have always shot right handed actions...but cannot shoot a dedicated right handed stock.
The bottle is NOT removable while it is pressurised. The Knight is shooting about 120 shots from a 250 bar fill. From 200 bar, arou d 3000psi, I get 55-60 shots.
For my personal use, I much prefer the wood stock to the feel of synthetic. The Beni-Kral have adjustable cheek rests for customer fit to your scope. Yes. That makes a huge difference.
The AV has more adjustments available if tinkering and never being satisfied is your thing. Some guys want all the knobs and switches, I dont need em.
To be fair, I have never held or shot the AV gun.