I can share my experiences although maybe not high end, but nevertheless it will give you my choice. We have an Iguana problem in South Florida. I grew up here. Never saw a one as a kid.. Fast forward 61 years.. So this is my thing. Between Jan and April Ive killed over a hundred just between my house and my two neighbors. Now I average 5-10 a week. I dont go on Iguana "hunts". I shoot them in our back yards before they can dig holes and lay more eggs. I use a Prod mostly. 22 cal. Head shots behind the eyes and lights out no matter if its a JSB diablo, Hades, Predators..doesnt matter. In fact, a .177 bb to the brain of an Iguana and its over. Now, my plan was to have better opportunity for a kill on those less than perfect shots by going with a .25 so I purchased an NP-03 in .25 from New England Airguns. Get it sighted in, moderator added and it shoots wonderful using JSB Hades 26gr..First outing with it and pop..less than perfect shot. Guess what? Yup, no difference. Just a bigger hole and they run away..not before another 1 or 2 "less than perfect shots"(probably to die but again. Im trying to be as humane as possible). My Prod is tuned to shoot in the low 700's and I use 16gr JSB's. The Kral's power is turned down to be in the high 600's using 26gr Hades. Roughly 10 fpe difference. But heres the kicker. Most shots go out the other side anyways. So, I really havent accomplished much in the long run. Accuracy will win this contest any day of the week. My next move will be a "high end" in .22 and practice, practice.