Always preferred manual. Honestly, I get bored driving if I am not shifting gears. I do not like automatic vehicles because I see all my vehicles as toys and I like to be in control of them and have fun.
I can understand where you are coming from, but I personally do not read much youtube comments. For people that do I can see why it would be annoying if you wanted more comments on the actual product and not directed at Anthony haha. But that is what the youtube comment section is.
I would check the gpu itself (Connections and seating). If you already re-installed windows and various AMD Drivers that is. I don't see how Modern Warfare would cause any issues. Unless it got too hot and messed the card up.
Yeah I would do Ebay,OfferUp, or even Craigslist. I have used all three for all sorts of things. Ebay is probably the safest route, but craiglist and offerup you are actually able to test it before you buy it.
This is exactly what I did when I purchased my 480. It only cost me 150$ after everything was said and done, granted I still have to wait for the rebates to go through.
And my experience with Jet has been great, for those of you that are worried.