The question is, do you want the sound to spread out?
I have a pair of the OMD-5's and have had Bose 901's. I have to say that the soundstage of these speakers is striking and can be seductive on initial listening. However, imaging sucks (as you might expect). After "soak iin" time, I reached teh conclusion that I like the omnidirectional sound for symphonic works (because it mimics their sound in a symphony hall), but I did not like it for most other types of music I listen to. I got rid of the 901's because their hi-end was very deficient. I use the Mirage OMD-5's as HT surrounds, which I think is a good application for this effect.
Naturally, YMMV, and if you primarily listen to symphonic, the omnidirectional sound may be your cup of tea.