well every one has thair opinion and i like every thing i here about the d15b it all sounds good to me because by boy has a zc and he dose keep up to b series and i'v asked the same thing/ d15b vs zc in alot of deff forums and it all come's down to the d15b so thats the way im going. now about the ls thing yea that should be true i'v herd it alot too. thank for the info