I have been used many types of tweeters. Everybody have good evaluation for JBL 075 and I used it. However, I don't make any comment on it. The best tweeter is National 5HH10 because it has highest cost performance. I would like to describe the result of study about 5HH10.
I installed 20mm processed zelkova board and it worked good. 1.5 Micro Capacitor was installed and the part of quite high range was only generated(It was used by the full range). Victor's 20 cm unit produced 30 years ago was used as full range. DAITO 20cm full range might be available as same type at most of speaker shops in Akihabara. The price is from JPY1,500 to JPY3,000 but the sound is incredibly nice. Why don't you try it?
Use full range speaker and if you have enough money to spend it, try to connect a tweeter by -6 dB above 10,000Hz. Then, you can hear feeble sound but you will notice that the sound is connected finely from low range to a high range when you hear it from 3 meter to 5 meter off.