G930 is pretty good. The range of wireless is a lot further than advertised (basement to 2nd floor or basement to immediately outside front/back door). Sound quality is good but bass distorts at high volume (you will probably want to use the software and turn down the bass a few notches if you are listening on high volume). The 3D audio from drivers is really good. Microphone quality is excellent and can be muted with button or by flipping it upward. The voice distortion features in the driver are good for trolling people or messing around. The G keys (multifunction buttons) are more helpful than you'd think, let you switch songs while you're taking a crap or on treadmill, or pause/rewind playback of video, etc etc. You can use it with ventrilo as push to talk while you go afk. You can use them to do any sort of macro. I had a pair that worked perfect for about 10 months then the right ear audio went dead. RMA'd and new pair has been good so far.
I had a $35ish pair of sony headphones I used before and I compared audio in the matrix fight scenes with both headphones and the difference was huge as expected. It was actually a bigger difference than I expected, there were sounds of glass breaking and stuff that were 100% not there with the cheaper headphones and sounded very nice on the G930.
They are also extremely comfortable, I wear them all day everyday pretty much. They block a fair amount of outside sound so you will probably miss phone calls and stuff. I often watch tv while I play games so I have to turn the tv volume way up. Only negative is that they aren't very breathable and they will make your ears kinda warm but not too bad.
Battery life is also pretty good, starts out at probably 8-10 hours and decreases over time. You can charge while using them and then unplug if you want to get up. They recharge really fast, maybe 1-2 hours while you use them. I'll probably get a new battery pack in a year or so.
If you get them, in the software go to options and disable the advanced graphics in the logitech gaming software settings, otherwise you may get errors if you are using Nvidia video card and playing games.
I used these things a lot and I would buy them again if they die or something. Any questions lmk. I've also used sennheiser pc 350 which my brother owns and the sound quality imo is pretty similar but you need an amplifier for those headphones or they sound like shit, and amplifier is not cheap. Had to get $200 top of the line soundcard to get similar audio quality and volume out of those. Those do block more sound I would say though, but aren't wireless and no Gkeys which are 2 of the best features imo.