FX Newbie Caliber Question

I’m looking at getting a FX Impact or Panthera. In my research it seems there are a few .25s and .30s for sale but I struggle to find .22s. In the world of competitive air guns and from a hunting perspective, is there a caliber I should aim towards? I like the .22s for increased number but f shots on a tank for iguana hunting here in FL. I’m just curious what pros and cons of the other calibers are. Would a .25 be best of both worlds, or the worst of both worlds? Thanks in advance!
 
I’m looking at getting a FX Impact or Panthera. In my research it seems there are a few .25s and .30s for sale but I struggle to find .22s. In the world of competitive air guns and from a hunting perspective, is there a caliber I should aim towards? I like the .22s for increased number but f shots on a tank for iguana hunting here in FL. I’m just curious what pros and cons of the other calibers are. Would a .25 be best of both worlds, or the worst of both worlds? Thanks in advance!
I have a high power 22 impact that doesn't go out very much anymore because of how much the dreamline tactical compact 25 at 43 fpe is. 100 yards with pellets isn't an issue and the 25s will slap those lizards.

Whatever gun you prefer, if you hunt 25 has always been solid for me in a couple guns.
 
I’m looking at getting a FX Impact or Panthera. In my research it seems there are a few .25s and .30s for sale but I struggle to find .22s. In the world of competitive air guns and from a hunting perspective, is there a caliber I should aim towards? I like the .22s for increased number but f shots on a tank for iguana hunting here in FL. I’m just curious what pros and cons of the other calibers are. Would a .25 be best of both worlds, or the worst of both worlds? Thanks in advance!
A 25 cal is a more versatile hunting rifle, you can run small pellets for small game and a higher shot count, or you can take bigger game with 50-60 gr slugs.