honestly! at the risk of making it appear like i've been successfully trolled.
there's masses of good stuff in there. and many things i haven't heard before. you want a percentage figure of what i've heard before? can i convert that percentage into a hipster quotient that will get me a discount at Tesco?
if you can disable your pride for...ooh five seconds....think of it another way. anyone's selection of a 1000 tracks they thought were great would contain stuff that you hadn't heard before. it's just inevitable.