Advantages of beryllium?


Can someone please explain the advantages of beryllium drivers over titanium or aluminum?

Also, how concerning are health risks associated with beryllium?

many thanks for your input. 
defiantboomerang
@johnk 
You just say silly things. You and your weird ideas about technology and it's evolution are laughable. I gave up respecting your opinions a while ago with that thread about how great ancient gear sounds. 
Now boys........behave...it is just a hobby.......just go on tweeter and let loose....that has become trendy now..
I've backed up my statements as much as anyone on Audiogon. That's all you get little troll.
@erik_squires 
Yeah, and I've noticed that's often a low standard. All too often hard statements of fact are left uncontested and given the leeway of opinion. You know, like yours up above. I'm pretty sure you've got more technical knowledge than I do and it shouldn't be a matter of me just randomly selecting a few waterfall plots to prove you wrong, but that's what I did, didn't I? 
It's just arrogance on your part that you think you're word alone is the only proof I deserve. That seems a bit more trollish than me challenging you. Oh well. Just an opinion I suppose. Deal with it. 
Actually kosst, some of us are operating even below erik’s "low standard", and enjoy reading his posts.