Replace my Usher be718 ?

Mboldada 1, 'Can a pair of usher diamond...?' Yes . But as
the earlier tweeters are not beryllium the 'diamond' are
not diamond. To exchange them make no sense at all. The
so called 'beryllium' tweeters are excelent so no need to
mess with tweeters. In my BE 20 I prefer 'beryllium' above
'diamond'. I assume that the BE-20's are individualy 'tuned' with cross-over components. Ie the produced tweeters have some variations(+/-3dB) so they need to be adjusted to the intended specifications. This can only be done with cross-over corrections. To exchange
one tweeter for some other is not as simple as some think.
Regards,

Maineiac... My two favorite musical instruments are the female voice the acoustic guitar, with the dobro leading the way...

Given what you said, I would concur that the Devore Super 8s should be auditioned.

Nvp suggested the B&W 805's. I am trying to decide between the Be718's and B&W 805's (both used) to upgrade from my B&W LCR 6's.

Tough call OP.