The Ohms are excellent speakers IMO, and they're substantially omnidirectional, so they'd be a good choice if you want one set of speakers to "fill the house". MBL, HHR, Duevel, and Mirage are well known alternatives, but your budget and your required volume levels may be important factors here.
The MBLs are capable of much higher SPLs than most speakers, so they'd be an excellent choice for listening from a distance. OTOH, they're (IMHO) less neutral (particularly through the bottom end) and vastly more expensive than the Ohms. I haven't heard the HHRs, but in conversation with Dale, he has indicated that the speakers have somewhat limited maximum output levels. They're also pretty expensive vis a vis Ohms. If you're looking to keep the expenditure under five figures, the HHR and MBL options are probably moot anyway.
Duevel is another expensive omnidirectional option, but they have one model (Planet) that's less pricey. I haven't heard that speaker and distribution was severely limited, last I looked. If you can figure out how to hear them, it might be worth the effort.
At lower price points, that leaves Ohm and Mirage as the main omnidirectional speaker options that are (AFAIK) widely available. I can't speak to Mirage (haven't heard 'em in years), but you may want to investigate this brand, too. As to the Ohms, they're sold direct with an in-home, money back trial period, so you can give it a shot if you're willing to deal with the potential hassle of returning them if you're not happy with the sound.
You could also go the Sonos/Blue-Sound route and add multiple zones to your home. You could probably link your system and add a couple of zones for about $1500 - more or less an Ohm price point. This approach represents a different set of trade-offs, but it's one more way to skin your particular cat.
Good luck.
Marty
