Hmm well - Maybe smooth is the wrong word, but it's very rounded, no Ice-pierce stuff, no scratchy or fizz going on, just liquid-sh.. ?
Either way - I did like the tone of the CS equally much to the Holy Diver, just different tones.. (listening to the BKP clips)
But maybe the holy diver will do a better job in a metalcore-ish leadtone?
Then again, I suppose it all comes down to versatility and wood-type..
when using a maple neckthrough, I suppose it's the maple that counts the most, and the alder just adding it's touch..
Tim said that the Ceramic Nailbomb works particular well in an alder/maple guitar, and together with a coldsweat with splitting capabilities, you can cover nearly everything .. which Is really nice..
The MM, being a bit warmer and more low-mid heavy, as what I heard on the BKP clips, I'm still quite unsure.. I really like low-mid heavy stuff, and since the 6505+ tends to be a tad less low-middy than it's sibling (the 6505), it might suite the amp better..
Then again, I read in a previous post, that someone really enjoyed their nailbomb with the peavey valveking amp..
(Oh the horror of options)...