I would use a usual scale as John illustrated above but I generally wouldn't give an album 10/10 because I have yet to here the perfect album which I think 10/10 (100%) denotes. Many have come close so I might give 9/10 but most of the best albums for me only get 7/10 or 8/10 as this denotes very good or great. Most of the music I like I would only give 5/10 or 6/10 as this is average for me! On my scale most things need to be average as that what average means. Of course some albums I would rate higher, they are good, great or sublime but most music I hear (not buy or purposely listen to) gets between 0 and 3 (utter dog shit in the eye to god damn turn this crap off right now)