Don,,,, I own a Talon with an 18 inch .22 barrel and shroud and I also own a .22 Marauder.
They are both outstanding rifles. Both are excellent target guns and both are excellent small game guns. I also have a .22 condor..... and I must say that I absolutely love my air force rifles but.................
That being said my advice is this........ if this is going to be your first PCP then go with the Marauder. It will come set up from the factory shooting with plenty of power and amazing accuracy,,, you won't have to do anything at all except air it up and start shooting. If further down the line, as you gain experience, you want to start tuning the Marauder for more or less power than you can easily do that. Also,, the Marauder has a beautiful trigger right from the box that can also be tweaked to suit your needs. I like my Talon trigger but you can't really adjust it and it is not even close to being as nice as the marauder triggers.
Also, you can tune and adjust the talon for power settings, but a big part of this involves in depth testing with a chronograph while you play with the "tophat" settings. Not really a hard project to do, but you need a chrony to do it along with the experience level.
Get the Marauder.... you won't be sorry... you can always get an air force rifle later on, but you won't regret getting the marauder.....
Others may give you different advice, but this is mine.....