I'm looking at getting one of the following, from Mad Lust Envy's reviews: http://www.amazon.com/AKG-Pro-Audio-K712PRO-Headphones/dp/B00E4WXWBE/ref=sr_1_1?ie=UTF8&qid=1406732241&sr=8-1&keywords=akg+k712 AKG K712 Pro - 350 bucks http://www.amazon.com/AKG-K702-Headphones/dp/B001RCD2DW/ref=sr_1_4?ie=UTF8&qid=1406732241&sr=8-4&keywords=akg+k712 AKG K702 - 220 bucks http://www.amazon.com/AKG-K702-65th-Anniversary-Edition/dp/B00A8LZ5GU/ref=sr_1_3?ie=UTF8&qid=1406732241&sr=8-3&keywords=akg+k712 AKG K702 Annie Edition - 419 bucks?? http://www.amazon.com/AKG-Signature-Reference-Class-Premium-Headphones/dp/B004444O3W/ref=sr_1_5?ie=UTF8&qid=1406732241&sr=8-5&keywords=akg+k712 AKG Q701 - 194 I'm going to be using these on my computer to play games, first person shooters included but I play errythang, so not limited to fps. And pretty much everything... movies, music, etc. First question: The Annie looks like an outlier in terms of price. Is this worth getting over the Q701 and the K712 Pro? Not sure why this is priced like this, maybe limited production driving artificial supply limits to drive the price up? Second question: Would the K712 Pro be better at 350 than the K702 at 220? K702 is almost 130 dollar difference, but if the K712 is 130 dollars worth of additional awesome, perhaps I would get it. I am leaning that way anyway, but waiting for someone to push me over the edge. Third question: What would I need to run any/all of this on my computer? I'm assuming I wouldn't want to use my real-tek motherboard audio out. I have an Onkyo 6.1 receiver with speakers currently plugged into my motherboard's optical out. This is really the biggest question, as I'm new to headfi, and not sure how to arrange the gear properly. Headphones into the receiver, receiver into a sound card? Or headphones into the sound card, in which case would I need an amp or some sort at that point? I see a bunch of technical terms like DAC and the like being thrown about. I'm confused as to what does what, and what I actually need to achieve great sound at home after the kids are asleep, since I can't blast my speakers at all nowadays... Soundcard for receiver, and then headphones separately, or headphones through the receiver? Thanks for any help anyone can provide, my apologies for not being "all the way there" in terms of knowledge. Just looking to get some sick sounds to replace my Logitech G930 as after 4 years it has been turning off and on randomly. Won't make the wireless headphone mistake again, as the battery dies now after less than an hour if it isn't plugged in, negating the whole wireless point of having them. And they drop at random even when they ARE plugged in. Worst.