Logitech Wingman Xtreme digital 3D user here. Have used them for about 3 years. Good sticks, comfortable, buttons well placed, inexpensive (usually $40 US, on sale for $30).
My beef with them is that the rudder twisty axis goes spiky after about 9 months. Each time, I've called Logitech, and they've sent me a new stick with few questions asked. I think they know it's a design fault, and for some reason would rather just replace it rather than redesign the stick. So I have 3, all with bad twisty axis. Bought CH rudder pedals so I don't have to deal with it, but I still use the stick. Still like them too. Just not the rudder.