I installed all my xbla titles to my 60 gig hdd, all my dlc to 60 gig hdd, used xm360 to unlock all of it. Worked fine. Then i extracted all my game iso's onto a USB HDD and i use xexmenu to play them. Theres not much to it lol. xexmenu has a built in ftp for uploading title updates, dlc, xbla, etc. So its basically the only thing i use. I also never use my real profile to run anything homebrew like xexmenu or xm360. I use a new fake profile so that nothing homebrew ever shows up on my games played list. I just sign out when the game starts and sign back in with my real profile for achievements.