Don’t have experience with the warthog…only had “cheap” thrustmaster force feedback in the past. I have had the VKB Gladiator NXT (plus version) for about 4 months. I have nothing to complain about with this stick. I didn’t know a stick could be so good. It is super configurable (albeit can be complicated for super advanced functions). You can setup like 40+ buttons (using one as a shift), axis as buttons, button as axis, encoders as axis or button, repeating buttons, etc. I have no problem with center and you can get a parts kit with it that comes with stronger springs if you want more tension. Its super sensitive. I easily use it for helicopters yet can throw it around in IL2 for combat. It does not have a clutch… so, as others have mentioned, you might want to look at their even higher end sticks that do.
IMHO, I think VKB blows away any of the other “big company” sticks at any price point. No, I do not work for VKB.