@freediver I agree with you on the Silver Flute drivers. Both the 6.5" and 8" represent tremendous value for money.
I have several Silver Flute tweeters (and a pair of 10" woofers), and in addition to not matching at all cosmetically, they really don't stack up to the aforementioned drivers.
These days, it's more difficult to find decent lower cost 8 ohm tweeters. So in this case, I recommend the typical upper shelf tweeters used in more expensive implementations. I like the ScanSpeak offerings myself, but that's not to slight Dynaudio, Morel, Tymphany, etc.