as a dealer for over 30 years our perspective our this question is simple
we have never experienced a single driver speaker worth owning the reason is simple you need a proper high frequency driver to produce clean and airy high frequencies and in the history of audio we have been moving into better and better tweeters from paper to plastics to metal domes to damped metal to ribbons and AMTs
as long as the tweeter is well matched with a properly implemented crossover you can create a seamless totally transparent music reproducer
Dave and Troy
audio intellect NJ