I doubt you'll be sorry if you get one, just be prepared. A chronograph is just about required to get them properly dialed in, and a large supply of pellets and patience needs to be on hand too :-). Don't get me wrong, they're really good guns, but they need some time invested to get the most out of them. If you prefer a gun that you can take out of the box, fill, load and shoot, then DON'T get an Air Force rifle, you won't be happy with it. If you like tinkering, if you like modding, if you like being able to make the gun uniquely yours, then go for it. Also, I wouldn't recommend one as a first PCP. If you can afford it, get an Air Arms S4XX. If that's out of budget range, get a Big Ed tuned B50/51.
One suggestion, keep a clear idea of what you want to do with it. I've tried the 12" barrels in both .177 and .22, came to the conclusion that I don't shoot the short barrels that well, not a barrel issue, a weight/balance issue. Went for power with a 24" .22 and custom valve, incredible accuracy but still weight/balance issues in the other direction. Finally settled on the 18" barrels, had a .177, really nice combo of power, accuracy, shot count and weight/balance, but needed more for that custom valve mentioned earlier. So now I have an 18" .22 and custom valve, so it must be perfect, right? Not quite :-). That custom valve is really too much for an 18" barrel, even dialed back it's tough to keep Kodiaks down close to 900 fps. And having recently gotten an AA S400E (in trade for my other Talon SS), I've gotten reacquainted with the fill it, load it, shoot it genre of air rifle, and it's kind of nice NOT tinkering for a change. So at the moment, I'm trying to make up my mind between getting rid of the valve, or getting rid of the whole rifle in favor of perhaps another Air Arms, or a repeater of some kind. Guess I've rambled long enough, time for another beer. Later.
Dave