What's the advantages of one ground over another? I've been doing some reading, and it seems that the fully hollow ground is the best for these.. is it a better shave.. better feel.. ?? Easier to handle? Read something about the Theirs Issard "singing" blade.. is that just a kind of "cool" thing to have, or is it actually something if imortance to the blades? I'm kind of thinking it's just like having a properly honed blade, so it has the "ting" to being well made.. for those who smoke, think along the lines of the "ding" of teh opening of the Dunhill lighters... <-- if you need to ask, you don't know.