The QSB's do make a nice clean install for sure so if you got the money to get them then its a no-brainer. I have seen many first timers try to install a QSB and screw it up pretty bad though, so if you don't have a bunch of soldering experience I recommend practice first before attempting the install, but also watch this video by
XJonnyGunsX... It is very informative, detailed and he has a really good camera so you can see up close to the board and try to learn some good techniques on soldering. He does good work and he is careful so watch closely. I realize this is not the same console as you will be using but it will give you a good idea about using QSB's which is good especially since the demon is basically just a big QSB. I'm sure there are other videos out there that can help with your particular motherboard but this is just to show you the basics. And remember to read the card that comes with the demon and follow what it says, and be careful installing it because it is not a noob-friendly installation. Good Luck...