Single way or multiway

I think putting this on the scale of right and wrong may not be productive. 

I encourage audiophiles to experiment on the cheap!  Madisound has a number of single "full range" drivers and kits for sale.  Rather than try to come to a definitive universal answer, build some of these kits and see how much fun they are. :) 

Every design of well,....everything is just a collection of compromises.  Something has to give in order for something else to be better.  If a design is as close to a no-compromise approach as possible, then what is given up is costs involved to make said design.

In other words, neither design is right or wrong.  Just pick which makes you happier when you listen to music.  

There are obvious advantages to be had from a point source phase coherent design. That is why increasingly horn + subwoofer solutions are being favoured by designers. The subwoofer is by design omnidirectional. Complex multi speaker designs have a hard time being phase coherent

These is one crossover-less speaker that has wide accepted approval..., just not with audiophiles.  It’s been made for a long time going through various iterations, but stays true to its original design.

No highs, no lows, must be Bose