Hi, Anatoliy! Just curious, if power is your goal, why did you sell the AR6? It's far more powerful than even a Condor, and it's a multi shot. But on to your question.
To answer your question, I need to ask a couple. What do you want to do with your rifle? I'm assuming hunting, but how big is the game you're after? The Condor is rated at something like 60 fpe in .22, but at that kind of power level, I wouldn't expect much in the way of accuracy. I have a custom Talon SS that can easily duplicate Condor power levels, but I find that my accuracy is best in the 40 fpe range. Which is way more than I need for the game I shoot :-). It's also very loud at those power levels, and it's expensive to quiet it down. It also makes for a very long, unwieldy rifle IMO.
Next question, do you like tinkering with your rifles, or do you want something that's ready to go right out of the box? If you don't like tinkering, DON'T get an Air Force rifle! They're great guns, but you HAVE to spend some time getting them dialed in, and that also means you just about have to have a chrony. And how important is it to be able to change barrels? In the last year, I've had two Talon SS's, with 6 different barrels. I'm currently down to one, an 18" .22, and that rifle is going to be on the market soon. I ALMOST offered it to you in trade for the AR6, but I just didn't need the power.
I have no personal experience with FX rifles, but I've heard good things about them. Expensive, though, a Condor would be quite a bit cheaper. An Air Arms S410ERB would be less expensive than a Gladi8tor, would produce about the same power level, and I know those are GREAT rifles. My older 400E will do 27 fpe, it's a .177, and the integral barrel shroud is very effective, the pellet strike makes more noise than the rifle. And the shroud on the newer guns is supposed to be even more effective. The trigger is outstanding, the Condor isn't anywhere close to the same class. Again, I don't know about the FX, maybe Dano can chime in, he had one.
I just realize I haven't answered your question, specifically, which rifle to buy. My advice, buy an AA S410. You already had a power house, apparently it wasn't what you were looking for. Recommending an AA S4xx is kind of like recommending breathing, there's just no way you can go wrong :-). Hope that helped, and if you have any more questions, fire away. Later.
Dave