Speedtest.net, and pretty much any speed test, removes your ISP's overhead. You're not really geting 10/10Mb out of your connection, though I agree 7/6 seems a bit low. On a 5Mb/800Kb connection, most people get about 4.3Mb/600Kb.
I'd avoid Coolmaxs if I were you. For about 50$ look into the Xclios
http://www.newegg.com/Product/Product.asp?Item=N82E16817189003
Dual 12v rails, 12cm fan and decently reliable according to the people in the psu forums.
If you look through the case mod gallery, there's this one guy who used a type of frosting sticker with excellent results. The thread title is something like "Frosted Case". Also, when I was at a hardware store the other day, I saw a bottle of lacquer in the spray paint section that supposedly...