WOW John..

Thats a tall order lol....
Being a springer addict, I do not have all the answers for ya...

But I do own two fantastic PCP's.. One is an FX Cyclone .22 and a Samatra .22
The FX is extremly accurate. I have only shot paper out to 40 yards with it but it is very quiet on all power settings. It has a rotary clip that holds 8 pellets. Also has a biathalon cocking lever which lets you keep your eye in the scope while cocking and shooting another round off..

It fills to 2900 PSI. When shooting targets, I generally us the low setting. 750 fps. I get about 4 or 5 clips through it before pumping it back up. Yes I use a pump..

At this point the psi left in the FX is around 1600 psi. It takes about 40 to 50 pumps to bring it to full again. By the way the FX develops up to 30fpe with the right pellets. Check out Straightshooter for data.
The Samatra is an Elephant gun.... lol One of the most powerful PCP's made in a .22. It shoots 31 gr pellets to boot and develops over 65 fpe. It is a bear to pump up. Ususally takes about 80 pumps or more to fill from 2200 psi. The gun holds 3200 psi. It is not as accurate as the FX but I am sure it would take down a possum at under 40 yards on full power. It has a 6 shot rotary clip and usually gets about 32 pellets before a refill.
Hope some of the other guys chime in on your thread here. If you want to know more about springer, I do know more about them than PCP's...

I shoot my springers allot more than my PCP's. More of a challenge shooting the Springers..

You can almost be bind like me and still hit a bullseye with most PCP's... hehe
Good Look John and welcome aboard..
Gene