just my opinion but I have a zenowii chip (generic drivekey) with ATI chipset. just plugged it in, taped it and for about 4 months I have had no problems with anything. They have reduced read speed, but its effects only slow down videos in games(and not that many) and hasnt affected any actual playing parts of any game. Havent had to update any software or risk any kind of brick. I am on a ntsc version, but they have a switch for any region. I have tested a lot of games with it...and I mean a lot. The only one that I have found so far that doesnt boot is ghostbusters...but that might of been my fault. The big mod chip dealers are more expensive and just so you know, there are other places to get them cheaper...last time I looked, mine was about 28 dollars