Note worthy Omni Directional Speakers..

MicroWalsh Talls - not true omni, but easier to place. The Duevel Planets look hip...

The best way to tell is, for $100 buy a full set of five, the Mirage omni's. Go to Parts Express and type in 'Spherex. where you will find a close out. Google the Spherex and you will find some hi-end reviews of these units. I have the original Sppherex xbox system. Unbelievable! You could also only buy two for $40. How can you lose?

I'll vote for the Duevel Planets. I heard them with Manley amps and preamp and that combination sounded like a much more expensive system than it was. It was engaging to listen to and had surprising bass for the size of the speaker plus the Planet has a modern art type appearance that would be easy to integrate into many home environments.

MicroWalsh Talls - not true omni, but easier to place. The Duevel Planets look hip...

If you mean more than strictly omni then I would add Shahinian.