For what it's worth, I play LoL and various FPS games on my PC a good deal, using 1200 dpi and a palm grip.
I've been running a medium sized, regular thickness QcK since I got sick of slick pads, and I can't say I have any real complaints about it. It tracks well with my Sensei and Deathadder, and my roommate has no problems with his Kinzu.
Discoloration in high use areas is an issue with these, but in the eight straight months of use I've had mine, it takes nothing more than a wet cloth to wipe it down and leave it nice and clean.
Ideally I'd still like to try some of the other, more expensive, offerings that you have listed, but the QcK is really a nice pad for the pricepoint. I can treat it like a replaceable good because it doesn't break the bank, and I find that pretty sensible for something that receives a lot of use. My suggestion is to give it a shot, worst comes to worst you're out $12 to Amazon.