why get a chip when u can softmod?
if its a NEW wii, u cant play backup DISKS with the drive... not a problem for wii games because u can play them off a USB hard drive, but to play gamecube games u need to replace the new d3-2 dvd drive with an older one (or get an sd gecko and u can play then when emukidd releases his new app to play GC games via an sd gecko)
old wii's can do everything without a modchip
new wii's can do almost everythign without modchip