You don't have to audition
all speakers. You DO have to audition, period. The more you have heard the better of a decision you can make.
You didn't ask about building an IMAX theater and that does not apply to a music system for a home. IMAX typically uses arrays akin to a concert setup, with separates and for a obvious reasons. Car speakers are coaxial as well, for a different reason, because space is at a premium in a vehicle design. That doesn't mean it is the best option, just the most equitable.
The type of design is not going to immediately mean a speaker has a specific advantage over another - that comes from the design as every speaker is a trade-off. Great sounding speakers start with a great speaker designer, regardless of what driver types are used. The
IMPLEMENTATION is what matters. You could give the same drivers to different designers and the result would be very different size, shape and x-over design which would result in different sounding speakers.
My recommendation:
http://philharmonicaudio.com/