tomimt: So they are fully compatible with X360 controllers? I've been meaning to change my old Rumble Pad 2 with something newer, as it's at times a hassle to setup correctly with games that support only X360 natively.
My F310 has high compatibility with XBox360 games out of the box, but whether it is really 100% compatible, I am not fully sure. There are a couple of PC games where I've seen some odd behavior:
Assassin's Creed (the GOG version): to me it appears the game supports both DirectInput and XInput gamepads, and apparently tries to select the correct mode automatically. In F310's case, it seems to consider it as a DirectInput gamepad even if you have it in XInput mode. I don't know why, maybe AssCreed detects it is something else than a genuine XBox360 gamepad, hence switches the game to DirectInput mode. So the solution is to switch the F310 to DirectInput mode, and it works great out of the box for the game.
Oddworld: The Stranger's Wrath: to me the controls seem a bit off, whether I have the F310 in either DirectInput or XInput mode. Like the analog triggers are mapped to looking up and down (IIRC) and such oddities. I don't have a real XBox360 gamepad to check if those odd controls happen with it too. Either way, just remap the controls ingame to your liking, at it works fine.
Maybe there are some other games too, but all the other XInput games I recall trying work great with F310 out of the box, also the Darksiders games, Dark Souls etc. Some games may be more finicky about it, after all I recall hearing that even the wireless XBox360 gamepad has compatibility issues with some XInput PC games, as does the XBOne gamepad. So if you want to be 100% sure and compliant, get the
wired (not wireless) XBox360 PC gamepad.
I have no idea if the XBox360 gamepad will retain as the de-facto standard for PC games, or will newer games start expecting the gamepad to be a XBOne gamepad?