you can use imgburn yes or clonecd(two of the best), i use this aswell as xbc , but remember your burn speed depends on the quality of your media , would you burn at 8x if you could and risk making a coaster i wouldnt dual layer media is too exspensive especially verbatim .
personally i buy cheaper media and set the speed at 2.4 it takes 45 mins to burn i surf the net and write stuff in between for tutorials etc so time isnt an issue a playable backup is